MOh

I build and publish products.

Products

Web Services

Yokai no Sensei — A chat app for English speakers to learn Japanese by talking with yokai characters.

doodleee — Draw a creature on a canvas, watch it come alive through physics simulation, and race it against opponents online.

Rojiura Ayakashi Kassen — A spectator simulation where AI-generated regional yokai compete across Japan's 47 prefectures. Replying on X spawns a yokai for your prefecture, and likes make it grow. The site also lets you chat one-on-one with the yokai.

Chrome Extensions

Tomarigi — A perch that watches over your AI agent's sessions, showing their status through a bird's gestures.

Gyokan — A foreign-language learning extension that explains selected text in Japanese on the spot.

Majibabu — A joke extension that turns the text on any page into baby talk and other silly styles with one click.

Mobile Apps

Uta Note — A songwriting assistant app for lyrics, chord progressions, and tab notation, so you never lose an idea.

Blog

I write a tech blog (in Japanese).