JO1: Current Members, Former Members, Music and Complete Guide
Group profile and current lineup
| Current members | Sho Yonashiro, Ren Kawashiri, Takumi Kawanishi, Syoya Kimata, Sukai Kinjo, Junki Kono, Keigo Sato, Ruki Shiroiwa and Issei Mamehara |
|---|---|
| Former members | Shion Tsurubo and Shosei Ohira |
| Company | LAPONE Entertainment |
| Debut | March 4, 2020 |
| Current status | Active nine-member Japanese group |
| Fandom | JAM |
Bottom line: JO1 is a nine-member Japanese group in 2026, carrying an eleven-member recorded history into a North American-facing year without pretending the lineup never changed. The interesting story is not “Japan copied K-pop.” It is how a public-vote group built its own performance language, member-led work and international infrastructure while the membership record kept moving.
Quick file
- Formed through Produce 101 Japan in 2019
- Debut: March 4, 2020 with PROTOSTAR and “Infinity”
- Agency: LAPONE Entertainment
- Current lineup: nine members as of August 27, 2026
- Former members: Shion Tsurubo (ended December 31, 2025) and Shosei Ohira (ended May 31, 2026)
- Official fandom name: JAM
- Current international project: ANIMAL, scheduled for October 2, 2026; 11th single AAO announced for November 18, 2026
Current status: the lineup is nine, and dates matter
The official JO1 profile currently lists Sho Yonashiro, Ren Kawashiri, Takumi Kawanishi, Syoya Kimata, Sukai Kinjo, Junki Kono, Keigo Sato, Ruki Shiroiwa and Issei Mamehara. That is the roster used for current-status cards and future release coverage. It is not an opinion assembled from recent thumbnails; it is the agency’s current profile record.
Shion Tsurubo’s JO1 activities ended when his LAPONE contract expired on December 31, 2025. Shosei Ohira’s JO1 activities ended on May 31, 2026 after an earlier hiatus and discussions with the agency. Their profiles remain because former-member history is real history. Older recordings, videos and credits must still name the people who made them. New campaign pages must not silently present them as active.
Produce 101 Japan built the door, not the whole house
JO1 was selected by viewers from the first Produce 101 Japan season, a format that made public ranking part of the group’s origin. The name joins the trainees’ shared path with the stated ambition to reach the top of the world. That origin explains the immediate audience investment and the pressure to make eleven people legible at once.
Six years later, audition placement is poor shorthand for artistic function. A debut ranking cannot explain who became a writer, actor, radio anchor, choreographer or solo artist, and it cannot tell us how the nine-member formation now redistributes work. This hub keeps the competition as dated context rather than a permanent caste system.
2020–2022: proving a Japanese survival-show group could become a system
PROTOSTAR and “Infinity” had to do several jobs simultaneously: introduce eleven people, establish enough synchronization to look credible, and give viewers recognizable moments without allowing the formation to fracture into unrelated solos. STARGAZER, CHALLENGER, STRANGER and WANDERING expanded the palette while the group learned what its size could do beyond the audition narrative.
KIZUNA in 2022 made continuity audible. JO1 could move between bright pop, harder performance tracks and fan-facing material without pretending every member supplied the same vocal or movement function. The most durable identity was not one genre. It was a willingness to make group scale itself part of the arrangement.
2022–2024: MIDNIGHT SUN, EQUINOX and the performance machine
MIDNIGHT SUN and “SuperCali” pushed precision and visual density. TROPICAL NIGHT and EQUINOX gave that machinery different emotional temperatures, while touring made the group’s performance claims answerable in longer rooms and longer sets. A music video can manufacture momentum through cuts; a concert must maintain it across fatigue, transitions and audience communication.
HITCHHIKER and “Love seeker” showed JO1’s polished confidence without solving every distribution problem. Eleven-member pop always risks giving viewers a memorable group silhouette but incomplete individual musical memory. Member credits, solo work and cross-medium careers became increasingly important because they created evidence outside brief title-track allocations.
2025: BE CLASSIC, Handz In My Pocket and an ending inside the anniversary
BE CLASSIC looked backward for the fifth anniversary, including fan-selected catalog material and a re-recorded “Infinity 2025.” Anniversary projects often sell continuity as if every year fits neatly into one celebratory montage. JO1’s 2025 did not stay neat: hiatuses and Shion’s eventual departure changed what “the group” meant while older eleven-member work remained central to the catalog.
Handz In My Pocket arrived during that unstable period. It belongs to the group history without being used as a shortcut for private conclusions about absent members. The official notices provide the membership facts. The music provides the artistic evidence. Conflating those sources creates either conspiracy biography or sanitized erasure; neither helps JAM follow the real chronology.
2026: EIEN, individual work and the ANIMAL international turn
The 2026 official discography includes EIEN, Breezy Love, member-led releases such as Takumi Kawanishi’s “Sketch,” and the North American-facing ANIMAL project scheduled for October 2. The official site also announced the 11th single AAO for November 18. Upcoming dates remain labeled as upcoming; they should not be described as released merely because pre-release pages are visible.
ANIMAL matters because “global” becomes an infrastructure test. Can international listeners find translated member context, exact official uploads, regionally available music and dated lineup information without constructing their own archive from fragments? JO1 already has six years of Japanese work. An international debut should open that history, not flatten the group into a supposedly brand-new discovery.
Nine-member performance architecture
A smaller lineup does not automatically solve distribution. Nine is still large enough for center fixation, background labor and vocal-color confusion. The current formation must decide which parts of the eleven-member visual grammar remain useful and which were dependent on people who are no longer present. That adjustment can be respectful without recreating former members through permanent empty spaces.
Sho supplies leadership and lower vocal stability. Ren anchors detailed movement and choreography. Takumi brings pop focus and writing; Syoya changes rhythmic and tonal texture; Sukai provides grounded color; Junki supplies vocal force; Keigo expands silhouette and mood; Ruki brings camera and media control; Issei carries athletic directness and growing adult authority. Those are repeatable functions, not unchangeable official positions.
Current members
Every card below uses that artist’s locally stored canonical portrait—the same image assigned to the profile’s hero, featured image and social previews. Cards link to the one canonical profile rather than creating a second “artist” page for work done outside JO1.
Sho Yonashiro
Leader, vocalist, lyricist and actor whose lower register and calm public judgment help a large room stay coherent.
Ren Kawashiri
Precision dancer, choreographer, songwriter and solo artist who turns technical control into musical personality.
Takumi Kawanishi
Pop-focused performer, writer and actor with a growing solo catalog and exact camera timing.
Syoya Kimata
Rhythmic, genre-curious performer, songwriter, actor and voice actor who keeps versatility from becoming vagueness.
Sukai Kinjo
Deep-voiced performer, writer and actor whose grounded color resets bright arrangements.
Junki Kono
Vocal engine, writer and broadcaster learning when power needs a full note and when it needs control.
Keigo Sato
Elastic dancer, fashion disruptor, actor and songwriter who makes polished images less obedient.
Ruki Shiroiwa
Vocalist, songwriter, actor, solo artist and radio anchor with accumulated camera and conversation judgment.
Issei Mamehara
Youngest current member, athletic dancer, writer and lead actor whose career moved well beyond his audition win.
Former members and the original eleven-member era
Former-member cards are separated from the current roster, not hidden and not mixed into a 2026 lineup. Shion and Shosei remain connected to the recordings, stages and credits made during their active years. Their pages use dated status language and official notices as the controlling source.
Shion Tsurubo
Former JO1 member through December 31, 2025. His low tone, direct delivery and performance history remain part of the original-era catalog.
Shosei Ohira
Former JO1 member through May 31, 2026. His fluid dance texture and recorded contributions remain attached to the work he made.
How international JAM can follow closely
Start at the JO1 official site in English, then check the current profile, official discography, dated news notices and verified video channels. Old search results may retain eleven-member descriptions after the official roster changed. Check the publication date before repeating them.
Use this hub as a map, not a substitute for official announcements. Exact-video Reacts resolve by YouTube ID. Member pages keep group and solo work on one canonical route. Distributor uploads remain distinct when their URLs and discovery paths differ. Fan translations can help navigation, but factual status and release dates should return to the agency source.
Official video tracker: the exact-video route
The current playlist audit contains one JO1 official-video match: WHATCHA DOIN’: JO1 Asked One Question and Took It Straight to America, exact ID eN2NlzPdcrs. Its React is a separate article because a group hub cannot do shot-by-shot musical and visual analysis without becoming impossible to navigate.
A zero in the missing-video column does not mean JO1 has only one video. It means every JO1 item presently captured in RaeRae’s audited playlist resolves correctly. When a new random song is added, the workflow checks the hub, current/former status, all applicable profiles, exact tracker relationship, unique local image and then builds the React.
Live evidence without the punishment ritual
JO1’s concert history matters because live sets reveal endurance, formation transitions and audience relation that an edited MV cannot. Live evidence should be compared by conditions: handheld festival audio is not a studio microphone, a dance break is not a vocal test, and one difficult note is not a referendum on whether a person deserved to debut.
The same standard protects praise. A backing track does not become invisible because a favorite member looked relaxed. Name what the source can prove, acknowledge what it cannot, and let repeated performances establish the pattern. Accuracy is more respectful than either prosecution or fantasy.
The J-pop and K-pop border is not a courtroom
JO1 is Japanese, works primarily through a Japanese agency structure and emerged from a Japanese edition of a Korean-origin audition franchise. The training, visual and promotional vocabulary travels across borders, but influence does not turn identity into a multiple-choice test. Calling JO1 “K-pop” can describe an ecosystem connection; calling the group J-pop can describe language, market and industry location. Neither label earns the right to erase the other context.
The useful analysis asks which systems are operating. Physical-single strategy, Japanese broadcast access, Korean performance production, global fandom platforms and North American distribution can coexist. Genre policing becomes especially silly when the actual songs move more freely than the arguments around them. This site files JO1 in the K-pop ecosystem while naming the Japanese industry facts directly.
Leadership after the lineup changed
Sho Yonashiro’s leadership is more visible during a transition, but leadership should not be turned into private crisis fiction. The verified facts are the departures, the official current roster and the releases. How members processed those changes behind closed doors belongs to them unless they choose to describe it. Public leadership can be analyzed through interviews, group coordination and the way current promotions distribute speaking responsibility.
A lineup change also tests whether fans confuse continuity with denial. JO1 can preserve its name, catalog and fandom while acknowledging that the formation is different. The nine members do not need to perform as if nothing happened, and they do not need to make every new chorus a coded public statement about former colleagues.
Vocal architecture: contrast before hierarchy
JO1’s vocal picture benefits from contrast: Junki’s open force, Sho and Sukai’s grounding, Ruki and Takumi’s pop clarity, and the other members’ different attacks and textures. A line count cannot measure whether one short phrase reorganizes the chorus. It can reveal patterns worth questioning, but it should not become the only evidence of musical value.
The nine-member era creates opportunities to hear colors that were crowded in earlier arrangements. That is not an argument that fewer is automatically better. It is a request for arrangers to use the changed space intentionally—longer exchanges, clearer harmonies, more audible lower voices and bridges that do something beyond preparing the next identical hook.
Dance architecture: why fewer bodies still require systems
Ren’s precision is a visible anchor, but JO1’s formation quality is not one dancer carrying eight passengers. Keigo’s extension, Issei’s athletic weight, Syoya’s texture, Takumi’s camera finish and the rest of the members’ individual solutions create the picture. The choreographic challenge is to preserve difference while making pathways safe and readable.
Nine bodies can create cleaner negative space than eleven, which makes errors and choices more visible. Wider lanes may reveal foot placement and timing that a dense cluster could hide. I want practices that stay wide long enough to show the system, not only challenge edits that remove the transitions most useful for understanding the work.
Member-led releases should remain findable
The official discography now mixes group releases, member-associated digital tracks, live products and other formats. That richness becomes a navigation problem when everything is filed under one brand without consistent artist routes. Takumi’s “Sketch,” Ren’s work, Ruki’s solo songs and other member-led releases should be linked from both the individual profile and the group chronology without being miscredited as full-group songs.
This is why the artist profile and member profile are the same canonical post. Splitting them would force the reader to choose whether the same person counts as an artist or a group member, then leave search engines and trackers to reconcile duplicates. One profile can document both scales and keep the relationship explicit.
America should not become the only definition of global
North American touring and the ANIMAL project are important, but JO1’s international history did not begin when the United States paid attention. Asian awards, regional fandom, translated access and years of cross-border platform circulation already shaped the group. “Global debut” is useful marketing language only if the hub explains what exactly is debuting: a release strategy and market route, not the existence of international listeners.
The American campaign also should not pressure every member into identical English fluency as a measure of commitment. Language learning is labor. Good international infrastructure supplies translation, accessible schedules and coherent metadata so members can communicate without being turned into a viral anxiety test at every interview.
Fandom labor is real, but it should not replace infrastructure
JAM translate notices, maintain timelines, identify clips and explain references because they care. That labor can build community, but an agency should not treat it as a free permanent localization department. When current membership changes, simultaneous translated notices and updated profiles are basic recordkeeping, not luxury fan service.
CVM Sekai’s role is smaller: keep canonical routes accurate, cite the official source and make the tracker usable. It should not scrape private fan spaces or convert unsourced summaries into facts. International access improves when each layer knows its job—agency supplies records, fans add culture and conversation, and editorial pages show their receipts.
What the next JO1 React should do
The next random JO1 song RaeRae sends should trigger the complete workflow: exact official upload, a 1,200-word-or-longer Iconic by Mistake React, unique locally stored frame, group relationship, all applicable current-member profiles and any former-member credits that genuinely belong to that video. A current release should not attach former members by habit; an older eleven-member video should not erase them for convenience.
The React should analyze the song in front of it, not recycle this hub. Which vocal contrast creates the hook? Does the edit reveal or conceal formation labor? What is the visual argument beyond “expensive”? Which section earns replay, and what would RaeRae push further? The hub provides context so the review can spend its words on evidence.
What a durable hub promises
This page will change again. Releases arrive, profiles expand and official status may move. Durability does not mean freezing JO1 on August 27, 2026. It means every update preserves dated history, edits the original canonical page, keeps media local and sourced, and refuses to turn a future announcement into permission to rewrite older work.
The promise is simple enough to audit: current people are current, former people are former, credits stay attached to contributors, exact videos resolve to exact Reacts, and every visible card opens the one profile it depicts. That is how a large ecosystem remains navigable after the promotional moment has moved on.
RaeRae take
JO1 is most interesting when the group stops asking international listeners to admire scale and starts showing what each person does with it. Nine current members means a new performance grammar; two former members means a history that requires honest labels; six years of releases means the American campaign cannot be treated like artistic birth.
I want the international rollout to make following them less like unpaid archival labor. Give JAM translated notices at the same time, keep exact uploads organized, explain which member-led release belongs where and leave the original-era credits intact. The music is doing enough work. Discovery should not be the obstacle course.
Sources and receipts
React image cards
Static cards route each exact official upload to its own in-depth React. Every card repeats that React’s featured and hero image so the archive stays visually traceable.
