many thanks everyone, I wasn't noticing notifications

Skyrim has Japanese audio + text, including subtitles, books, etc. I don't know if you can write the player character's name in Japanese though. At least I was not able to.

On another note, I've noticed that Batman: Arkham Knight appears as having Japanese Audio also in the game description, but only for the Premium Edition: https://www.gog.com/en/game/batman_arkham_knight_premium_edition

Could anyone confirm if it's there and only for the Premium Edition? Is the Japanese audio added with the season pass?

Legend of Heroes: Trails from Zero

The Japanese dub is actually the only dub in the game.

SpongeBob SquarePants: Battle for Bikini Bottom – Rehydrated

has a Japanese dub