Transfer-San is a short (10-15 minutes) Renpy videogame made as a class project made by Grifflon and myself. The game is a very simple science-fiction story that uses the framing device of a school-age visual novel set in a Japanese school to talk about the unstranslateable nature of honorifics in Japanese and the ambiguity they can introduce in communication with non-Japanese speakers.
The game has a very vague yuri subtext, in that a few jokes about a senpai character and a super smug expression were parleyed into larger themes. Also the story is written to be full of little subtextual hints – about Japanese as a language or about the style of story this game represents.
The game is free, and you can download it here: