Kokomi is a playable character in Genshin Impact, the open-world action role-playing game from HoYoverse, where she leads Watatsumi Island as its Divine Priestess. The Japanese word kaeshite means give it back or return it, and the clip has circulated online through Genshin fan edits, short videos and soundboards, where the single word is easy to reuse out of context. Its popularity comes from that combination of a recognisable character and a universally understood demand, which lets creators apply it to everyday jokes about borrowing, stealing and refusing to share.