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ZETA DIVISION

ZETA DIVISION is expanding its creator side and its partnership business. The team signed streamer Haseshin to its CREATOR division on October 1 and announced the departure of Sonic the Hedgehog from that same division on September 20, while a sponsorship with NTT East signed on September 15 centers on information dissemination and event measures.

Synthesized from 6 Yomimono stories · updated Oct 16

ZETA DIVISION, the esports team operated by GANYMEDE Inc., spent the fall of 2026 reshaping the two sides of its business: the creators it signs and the partners it takes on. The clearest move came on October 1, when streamer Haseshin joined the CREATOR division. Haseshin has streamed games since 2011, carries 950,000 YouTube subscribers, and plays mainly FPS titles. The signing followed the September 20 announcement that Sonic the Hedgehog was leaving the same division, ending a run that began with a surprise July 2026 signing billed as for one summer only.

The organization's partnerships moved in parallel. On September 15, ZETA DIVISION and NTT East announced a sponsorship agreement covering information dissemination and event measures, launched with a movie titled "THE ULTIMATE STANDARD" featuring members of its APEX LEGENDS, BRAWL STARS, and OVERWATCH divisions and its creator division. A campaign around the deal gave away original postcards at the ZETA DIVISION booth at Tokyo Game Show 2026 and ran an A1 poster lottery through a quote-repost on X.

ZETA DIVISION also appears in a co-developed product. A leverless arcade controller, the ZENAIM ARCADE CONTROLLER LEVERLESS, is scheduled for display at TOKYO Gaming-PC STREET 9 in Akihabara on October 10, 2026, with a 0.75mm stroke, rapid trigger, and per-button user calibration. On the same October 10 day, REJECT announced "Oji League vs Streamer Army," a Street Fighter 6 showdown set for Saturday, October 24. The stories do not connect ZETA DIVISION to that event beyond the shared date.

In the background, the creator roster keeps producing outside projects. GANYMEDE announced on September 28 that six creators will debut under UltraLMTM, the VTuber brand produced by streamer k4sen, who belongs to ZETA DIVISION's CREATOR division.

Key facts

Creator signing
Streamer Haseshin joined ZETA DIVISION's CREATOR division, announced October 1, with 950,000 YouTube subscribers as of the announcement. ↗
Creator departure
Sonic the Hedgehog left the CREATOR division, announced September 20, ending a run that began with a July 2026 signing billed as for one summer only. ↗
Sponsorship
ZETA DIVISION signed a sponsorship agreement with NTT East Corporation, announced September 15, covering information dissemination and event measures. ↗
Sponsorship movie
"THE ULTIMATE STANDARD" launched the NTT East deal, featuring YukaF of APEX LEGENDS, Sitetampo of BRAWL STARS, Shu of OVERWATCH, and Laz of the creator division. ↗
Sponsorship campaign
Postcards were given away at the ZETA DIVISION booth at Tokyo Game Show 2026 at Makuhari Messe from September 17 to September 21, and an A1 poster lottery ran through a quote-repost on X by September 30, 2026. ↗
Co-developed controller
The ZENAIM ARCADE CONTROLLER LEVERLESS, a leverless arcade controller co-developed with ZETA DIVISION, supports a 0.75mm stroke, rapid trigger, and per-button user calibration. ↗
Controller display
The controller is scheduled for display at TOKYO Gaming-PC STREET 9 in Akihabara on October 10, 2026, from 1:00 pm to 5:30 pm, with free admission at LIFORK Akihabara II. ↗
VTuber brand
Six creators will debut under UltraLMTM, the VTuber brand produced by streamer k4sen of ZETA DIVISION's CREATOR division, announced September 28, with first streams on October 5 and October 6 at 19:00 each day. ↗

Timeline

Written with AI from the cited Yomimono stories below, each itself sourced. See our editorial policy. Every fact links the story it came from.

Facts

Announced
sponsorship contract with NTT East Japan Corporation · 2026-09-15
Announced
original postcards distributed at ZETA DIVISION booth at TOKYO GAME SHOW 2026 (TOKYO GAME SHOW 2026) · 2026-09-15
Announced
40 A1-size posters, 10 of each of the four, given away by lottery · 2026-09-15
Noted
A special movie marking the start features YukaF of the APEX LEGENDS division, Sitetampo of the BRAWL STARS division, Shu of the OVERWATCH division, and Laz of the creator division. · 2026-09-15

Connections

Staff change
Sonic

Structured graph also available as JSON at /public/entities/zeta-division. CC BY 4.0.

All coverage

Oct 10

Oji League vs Streamer Army Set for October 24 Street Fighter 6 Showdown

REJECT announced "Oji League vs Streamer Army," a Street Fighter 6 showdown between Oji League participants and popular streamers, for Saturday, October 24. Koku-nii and SHAKA traded trash talk in a video released with the announcement, trading lines like "Bring it on, kid" and "Fine by me, old man." Silhouettes believed to be participants appear alongside epithets in the video's latter half, including "Teisei," "Goketsu," and SHAKA's "Legendary Battlefield King Sniper." Format and rules are not yet clear.

Oct 5

ZENAIM Leverless Controller With 0.75mm Stroke Heads To Akihabara Event

ASCII.jp will show the ZENAIM ARCADE CONTROLLER LEVERLESS, a leverless arcade controller co-developed with ZETA DIVISION, at TOKYO Gaming-PC STREET 9 in Akihabara on October 10, 2026, from 1:00 pm to 5:30 pm. The controller supports a 0.75mm stroke, rapid trigger, and per-button user calibration. Admission is free at LIFORK Akihabara II.

Oct 3

Haseshin Joins ZETA DIVISION CREATOR Division

GANYMEDE announced on October 1 that streamer Haseshin has joined the CREATOR division of pro esports team ZETA DIVISION. The company also released a joining announcement movie on YouTube. Haseshin has streamed games since 2011, and their YouTube channel has 950,000 subscribers as of the announcement. Known for rapid-fire Kansai-dialect talk and a bright personality, Haseshin plays a range of titles, mainly FPS games, and appears at events beyond streaming. In a comment, Haseshin said they will keep working energetically in the new environment to deliver energy to as many people as possible, and asked for support at ZETA DIVISION. Haseshin's published profile lists a birth date of October 31, 1995, favorite foods of hamburgers, onigiri, and lasagna, and a motto about not forgetting who they are, while the profile from a second announcement lists hamburger steak, onigiri, and lasagna.

Sep 28

k4sen-Produced VTuber Brand UltraLMTM Names Six First-Generation Members

GANYMEDE Inc. announced on September 28, 2026 that six creators will debut under UltraLMTM, the VTuber brand produced by streamer k4sen, who belongs to the CREATOR division of the esports team ZETA DIVISION. The six are Riina Koga Fluorite, Amari Mahiru, Yuime Yuina, Hanasake Sei, Washimi Daisho, and Yayoi Chiu. First streams run over two days at 19:00 each day: three members on Monday, October 5 and three on Tuesday, October 6, each on their own YouTube channel. From 20:30 each day, the three who streamed plus k4sen appear on a program on the UltraLMTM official channel. Profiles, visuals, a trailer, and X accounts for all six launched with the announcement. The brand's stated concept is "Beyond imagination, ideals squared."

Sep 20

ZETA DIVISION Announces Sonic Is Leaving Its CREATOR Division

ZETA DIVISION announced on September 20 that Sonic the Hedgehog is leaving its CREATOR division, ending a run that began with a surprise July 2026 signing billed as for one summer only. The team thanked him for his contributions, and Sonic posted parting words thanking k4sen and everyone, saying the events and game showdowns were seriously fun.

Sep 15

ZETA DIVISION Signs NTT East Sponsorship Deal

ZETA DIVISION, the esports team operated by GANYMEDE Inc., signed a sponsorship agreement with NTT East Corporation, the two announced on September 15, 2026. Under the deal, ZETA DIVISION and NTT East will run information dissemination and event measures together. A special movie titled "THE ULTIMATE STANDARD" marks the start, featuring YukaF of the APEX LEGENDS division, Sitetampo of the BRAWL STARS division, Shu of the OVERWATCH division, and Laz of the creator division. A campaign tied to the sponsorship gives away original postcards at the ZETA DIVISION booth at Tokyo Game Show 2026, held at Makuhari Messe from September 17 to September 21, and runs an A1-size poster lottery with 40 posters, 10 for each of the four featured members, through a quote-repost on X by September 30, 2026. Entries require following the NTT East eSports and Gaming account and the ZETA DIVISION account.