SUSHI RAMEN Riku

His Instagram bio describes him as "a strange person who moved to school wanting to cause a big explosion," meaning he literally relocated to a school building to use it as a permanent base for his extreme experiment and stunt content. His hashtags and video series labelled すしりく学校暮らし (Sushi Riku school life) treat the school as an ongoing storyline and recurring setting rather than just a filming location.

Mountain Sausage School — マウンテンソーセージ学校 — appears to be the name Riku has given to the school he moved into as his content base, and it recurs in his hashtags alongside a companion concept called the "Mountain Sausage Student Council" (マウンテンソーセージ生徒会). It functions as running in-universe world-building that gives his school-life stunts a comedic institutional identity fans can follow.

He is best known for outlandish physics-based DIY stunts — his videos include riding a bamboo shoot as a "natural elevator," an exploding Tarzan rope prank, rotation bar rhythm challenges, and building a fully functional self-made food delivery robot. His TikTok bio brands him a "weird experiment expert," and that absurdist engineering angle is the core of his identity across all platforms.

Yes, one of his video titles documents the construction of a custom 配膳ロボット (food delivery robot) built from scratch. He also created a short expressing his goal of bringing that same robot onto a live radio program, showing he uses DIY robotics builds both as standalone content and as stunts he tries to take into the real world.

A video title on his channel reads "I want to appear on radio with my self-made food delivery robot," tagged with #星野源 (Hoshino Gen) and #オールナイトニッポン, making it clear that appearing on the famous late-night radio show was a stated goal he built content around. Whether the appearance actually happened isn't confirmed in available data, but the attempt itself became part of his content.

His hashtags explicitly include #ミッションインポッシブル, #ファイナルレコニング, and #トムクルーズ, pointing to a video tied to the Mission Impossible: Final Reckoning film. Given that his entire channel is built around high-risk physical stunts, a Mission Impossible-themed collaboration is a natural brand fit and likely one of his most high-profile sponsored integrations.

Yes, his Instagram bio announces "1st写真集が出ました" — his first photo book has been released, with a link provided for fans to view or purchase it. It marks an expansion beyond video content into physical print media, which is a significant milestone for a Japanese online creator.

His YouTube bio lists his stated ambition as "Travel all the way to the moon, take a physical fitness test and get a perfect score." It's a deliberately absurd goal that perfectly captures his brand voice — pushing physical and creative limits to their most ridiculous extreme — and longtime fans treat it as a signature part of his persona.

Yes, he runs a separate English dubbed channel that he references directly in his Japanese YouTube bio as "My new English Channel!! (Dubbed)," complete with a link. The dubbed format allows international viewers who don't speak Japanese to follow his experiments and stunts without subtitles.

His main Japanese channel has surpassed 10 million subscribers, placing him firmly in the Mega tier and making him one of Japan's largest domestic entertainment YouTubers. His engagement rate runs well above the category average for creators at that scale, which is a strong signal of an unusually loyal domestic fanbase.