Ken Matsudaira is an active participant in multiple digital projects: a Matsuken Anime YouTube debut on August 29, a VRChat costume and dance motion sale starting September 9, and a talking AI plushie scheduled for December 2026.
Ken Matsudaira's persona has moved across several digital formats in 2026. In June, Rec Co. launched the AI Charmy brand with a Matsuken plushie that uses recordings of his real voice and can read diary entries, with intimacy levels growing through conversation. The plushie is priced as a combination of the product, a monthly subscription, and additional content, and is scheduled for December 2026.
In August, Tatsunoko Production announced the short anime project Matsuken Anime, debuting on YouTube on August 29. Matsudaira voices the title character, with Sumire Uesaka as his dog companion Matsu Inu and Daisuke Namikawa in other roles. The project adapts his 'Matsuken Samba' songs into stories where good defeats evil.
In September, ARROVA began selling a Matsuken Samba II costume and dance motion with music on the TOKYO AVATAR GATE VRChat marketplace. The digital items use 3D model and motion data from Matsudaira's previous virtual live performances, with V Inc. handling the costume and gimmick. A concurrent in-world event runs through October 2, featuring an hourly time signal and a hunt for hidden Mini Matsuken figures.
Synthesized by Yomimono from the cited Yomimono stories below, each itself
sourced, then editorially reviewed. Every
fact links the story it came from.
Sep 1
ARROVA will sell a Matsuken Samba II costume and dance motion with music as VRChat digital fashion on the TOKYO AVATAR GATE marketplace starting September 9, 2026 at 17:00. The items are based on 3D model and motion data from Ken Matsudaira's previous virtual live performances, with ARROVA producing and V Inc. handling the VRChat costume and gimmick implementation. Material data comes from Sanki Promotion and Shogakukan. Three products go on sale: a set combining the kimono costume with the dance motion and music gimmick for 1,650 yen, and the costume alone or the gimmick alone for 1,100 yen each. The gimmick lets desktop users dance the Matsuken Samba II along with the music. A limited-time event runs in the TOKYO AVATAR GATE world on VRChat from September 12 to October 2, 2026. During the event, an 'All-Night Matsuken Time Signal' plays the song once an hour at five minutes past, and twice an hour on Fridays. The world also holds a hunt for 10 hidden Mini Matsuken figures and a photo spot with Ken Matsudaira's 3D model and a gold flurry filter.
Aug 28
Tatsunoko Production announced the short anime project Matsuken Anime will debut August 29 on YouTube. Ken Matsudaira voices the title character Matsuken, and Sumire Uesaka voices his dog companion Matsu Inu. Daisuke Namikawa voices other characters. The project adapts Matsudaira's 'Matsuken Samba' songs into stories where good triumphs over evil.
Jun 17
Rec Co. announced the AI Charmy brand on June 17, a line of talking AI plushies that converse with official IPs. The first release is a Matsuken (Ken Matsudaira) plushie, scheduled for December 2026. The plushie uses recordings of Matsudaira's real voice, can read diary entries, and increases an intimacy level through repeated conversations. Pricing combines the plushie, a monthly subscription, and additional content.