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OTAGROUP

OTAGROUP's activities in its own stories run through Avivi, its partner agency with the VTuber app Avvy, and through its music label OTAGROUP Music. Its most recent announcement is an online lecture by Ringo Kujo for Avivi on October 17, 2026.

Synthesized from 4 Yomimono stories · updated Oct 17

Across the four stories, OTAGROUP appears less as a single production house than as a coordinator of separate talent ventures. Its music label OTAGROUP Music released Hitone Iri's original song Aromatic Arcana on June 24, 2026, a track composed and co-written by Koji Matsuzaka. The label side stands on that single release in this coverage.

The agency's Avivi arm, a partner agency of the avatar creation and streaming app Avvy operated by AnotherBall, carries most of the recent news. Avivi VTuber Yaya took first place in the Rookie Top Challenge, an event that ran August 1 to 7, 2026. Avivi followed that with an online lecture by Ringo Kujo on Saturday, October 17, 2026, from 19:00 to 20:00, tied to the publication of her book How to Start VTubing from Zero! The session is free on Google Meet and applications close October 16 at 20:00. The pitch to newcomers through Avivi is the throughline linking the win and the lecture.

A separate OTAGROUP project sits outside the Avivi frame. The Meta Grandma Silver Shield Project is a collaborator drive to bring the YouTube channel of late-stage elderly VTuber Meta Grandma to 100,000 subscribers, from roughly 80,000. Hiroko, the 84-year-old original member from Mihara City, debuted in December 2022. The drive frames 100,000 as a shared target rather than one an eight-member group reaches alone.

Key facts

Most recent announcement
Online lecture by Ringo Kujo for Avivi on Saturday, October 17, 2026, 19:00 to 20:00 ↗
Lecture format and access
Free on Google Meet; applications close October 16 at 20:00 ↗
Lecture tie-in
Publication of Ringo Kujo's book How to Start VTubing from Zero! ↗
Avivi's app partner
Partner agency of Avvy, the avatar creation and streaming app operated by AnotherBall ↗
Rookie event result
Avivi VTuber Yaya took first place in the Rookie Top Challenge, held August 1 to 7, 2026 ↗
Meta Grandma subscriber push
Collaborator drive aims to bring the channel to 100,000 subscribers from roughly 80,000 ↗
Meta Grandma original member
Hiroko, 84, from Mihara City, debuted in December 2022 ↗
Music release
Hitone Iri released original song Aromatic Arcana on June 24, 2026, through OTAGROUP Music ↗
Song credits
Composed and co-written by Koji Matsuzaka ↗

Timeline

Synthesized by Yomimono from the cited Yomimono stories below, each itself sourced, then editorially reviewed. Every fact links the story it came from.

Facts

Announced
Avivi will hold an online lecture by Ringo Kujo on Saturday, October 17, 2026, from 19:00 to 20:00 · 2026-10-13
Announced
The online lecture runs free on Google Meet, with applications closing October 16 at 20:00 · 2026-10-13
Announced
Meta Grandma Silver Shield Project, a collaborator drive aimed at bringing the YouTube channel of late-stage elderly VTuber Meta Grandma to 100,000 subscribers · 2026-09-15

Connections

Structured graph also available as JSON at /public/entities/otagroup. CC BY 4.0.

All coverage

Oct 13

Avivi Hosts Online Lecture By Ringo Kujo For VTubing Guide Book

OTAGROUP announced that Avivi, the community-type agency partnered with the VTuber app Avvy, will hold an online lecture by Ringo Kujo on Saturday, October 17, 2026, from 19:00 to 20:00. The session marks the publication of her book How to Start VTubing from Zero! and runs free on Google Meet, with applications closing October 16 at 20:00.

Sep 16

Avivi VTuber Yaya Wins Rookie Top Challenge

Yaya, a VTuber affiliated with the Avivi partner agency, took first place in the Rookie Top Challenge, an event that ran from August 1 to August 7, 2026. Avivi is a partner agency of Avvy, the avatar creation and streaming app operated by AnotherBall. In a posted comment, Yaya thanked viewers, commenters, and supporters, and asked for continued support.

Sep 15

Meta Grandma Project Seeks Collaborators for 100,000 Subscriber Push

OTAGROUP has opened applications for the Meta Grandma Silver Shield Project, a collaborator drive aimed at bringing the YouTube channel of late-stage elderly VTuber Meta Grandma to 100,000 subscribers. The channel has roughly 80,000 subscribers, and the project notes the timing could work as a Respect for the Aged Day plan. Hiroko, the 84-year-old original member from Mihara City, debuted in December 2022.