Rias is the developer behind Kitsune to Kaeru no Tabi: Adashino-shima no Kotoro Oni, which appeared at the room6 booth at Tokyo Game Show 2026 on Nintendo Switch. A separate PartyLook figure of Koakuma Riasu-chan, an Ayuma Sayu character, is scheduled for June 30, 2027.
Two 2026 stories place the name Rias in different parts of the Japanese game and hobby market. The most recent, from Tokyo Game Show 2026, concerns the developer Rias and Kitsune to Kaeru no Tabi: Adashino-shima no Kotoro Oni, shown at the room6 booth for Nintendo Switch. In an interview Rias said the project has taken nearly ten years including the concept stage, and that directing the game is a new experience. The same interview covers the demo's added opening and the Kaeru Shuran meal scene.
Earlier, PartyLook announced a 1/6 scale figure of Koakuma Riasu-chan based on illustrations by Ayuma Sayu. The standard figure is listed at 22,000 yen on Amazon Japan, with a double set bundling an undressed version at 44,000 yen. Both stand about 248mm tall including the base and carry a release date of June 30, 2027. Pre-orders are open now.
The two entries involve different people: one is the developer Rias, the other the character Koakuma Riasu-chan. What they share is timing, both surfacing within weeks of each other in September 2026, and neither is established beyond a single report. The developer's ten-year timeline and the figure's release date are the concrete items either story leaves behind.
Synthesized by Yomimono from the cited Yomimono stories below, each itself sourced, then editorially reviewed. Every fact links the story it came from.
Structured graph also available as JSON at /public/entities/rias.
CC BY 4.0.
At Tokyo Game Show 2026, 4Gamer interviewed Rias, the developer of Kitsune to Kaeru no Tabi: Adashino-shima no Kotoro Oni, shown at the room6 booth for Nintendo Switch. Rias said the project has taken nearly ten years including the concept stage, spoke about the demo's added opening and the Kaeru Shuran meal scene, and said directing has been a new experience for them.
PartyLook is producing a 1/6 scale figure of Koakuma Riasu-chan, based on illustrations by Ayuma Sayu. The standard figure sells for 22,000 yen on Amazon Japan. A double set bundles the standard figure with an undressed version for 44,000 yen and is listed as an adult item. Both products stand about 248mm tall including the base and are scheduled for release on June 30, 2027. Pre-orders are open now.