UltraLMTM, k4sen-Produced VTuber Brand, Debuts 6 Members With Streams on Oct 5 and 6

Six creators will debut from “UltraLMTM,” a VTuber brand produced by k4sen of the professional esports team ZETA DIVISION, operated by GANYMEDE Inc. Their visuals and profiles were revealed on Monday, September 28, and their debut streams will take place at 7:00 p.m. on Monday, October 5 and Tuesday, October 6.

Key Points

  • Debut lineup: Six first-generation members (Lina Koga Fluorite, Amari Mahiru, Yuikawa Yuina, Hanasaka Sei, Washimi Taisho, and Pachipa Chiu)
  • Debut stream dates: October 5 (Mon) and 6 (Tue), 2026, from 7:00 p.m. each day, three members per day
  • Where to watch: Each creator’s YouTube channel; an official stream featuring k4sen also runs from 8:30 p.m. each day
  • Producer: k4sen, of ZETA DIVISION’s Creator division
  • Operating style: “Patch-style operation,” delivering each development of their activities as a “Patch”

Launching Under the Concept “Beyond Imagination, Ideals Squared.”

UltraLMTM producer k4sen
k4sen, who serves as producer (captain)

UltraLMTM is a VTuber brand driven by “the creators’ ideals” and “the community’s ideals,” under the concept “Beyond Imagination, Ideals Squared.” k4sen, the producer, aims to make every member’s ideals come true and supports the creators’ challenges. k4sen also drew attention in August at The k4sen Con 2026, held at Yoyogi National Stadium.

The story is set on “LMTM,” a cyber exploration ship that left Earth for the virtual world in search of possibilities beyond imagination. Captain k4sen has spent a year searching and found six “rough gems,” and together they begin a new journey.

Engineers and PR Staff “Riri” and “Tete” Also Appear

LMTM engineers and PR staff Riri and Tete

The engineers of “LMTM” and the staff in charge of the official social media accounts are “Riri” and “Tete,” cyber lifeforms pretending to be cats. Announcements and information on projects and events on the official social media accounts will come from these two.

On September 28 at 7:00 p.m., an announcement program, “LMTiMes!,” was streamed on the official UltraLMTM YouTube channel, revealing the names and visuals of the six members along with the full picture of Patch 1.0.

Six Distinctive Members Debut, from Gaming to Singing and Dancing

Three of the debutants are “Lina Koga Fluorite,” a rookie dancer traveling the world, “Amari Mahiru,” a mischievous prankster, and “Yuikawa Yuina,” an apprentice sorcerer who dreams of becoming an idol.

They are joined by “Hanasaka Sei,” the owner of a flower shop where you can drink, “Washimi Taisho,” a formerly sheltered son of a distinguished family, and “Pachipa Chiu,” the self-proclaimed 8,008th head of a dragon clan that commands thunder. The six will be active in a wide range of areas, including singing and dancing in addition to gaming. Each creator’s X account has also been active since September 28.

What’s Next: Debut Streams on October 5 and 6, Activities Updated Through Patch-Style Operation

UltraLMTM October 5-6 debut streams and official program schedule

On Monday, October 5, Lina Koga Fluorite, Amari Mahiru, and Yuikawa Yuina will hold their debut streams in 30-minute slots starting at 7:00 p.m., followed by an official stream at 8:30 p.m. featuring the three members and k4sen. On Tuesday, October 6, Hanasaka Sei, Washimi Taisho, and Pachipa Chiu will appear in turn from 7:00 p.m., with an official stream scheduled for 8:30 p.m.

UltraLMTM adopts a unique operating style in which developments in its activities are delivered as “Patches,” much like online game updates. The first, “Patch 1.0 THE LMTM AWAKENS,” has the theme of “awakening,” and besides the debut streams, a talk with k4sen and game collaborations are also planned. Before major patches, preview and announcement programs are expected to be streamed on the official YouTube channel.

Our Take

Popular streamers producing their own VTuber brands make us feel that the line between streamers and the VTuber industry is blurring more and more. In particular, the “Patch-style operation,” modeled on game updates, is an idea unique to k4sen, who is rooted in gaming stream culture, and it is an interesting attempt that also gives fans something to look forward to: the “next patch.” We will be watching closely from the debut streams on October 5 and 6 to see what ideals each of the six members brings to life.

Source: PR TIMES

About the Author

Streamer Magazine Team

“Streamer Magazine” is a web media platform that supports those interested in VTubers and streaming creators, those who are active in streaming, and those who want to start streaming. We provide a wide range of enjoyable information for everyone, from beginners to experienced streamers.

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