Touhou Little Maid: Epistalove

Epistalove works alongside the Touhou Little Maid mod and extends its maids with letter writing. A maid can write a letter to her master and hand it over directly when the player is nearby, or send it through Epistalove's mail system. In that case the maid holds the letter until a personal mailbox appears, and the player has to go and retrieve it from the mailbox.

Delivery depends on the maid's mode. In Following mode the maid hands the letter straight to the player. In HOME mode the maid stays at her post and uses a nearby mailbox. Writing and delivery can also be triggered by advancements, since a KubeJS example in the author text makes the maid write a letter each time a player earns a new advancement, and most well-known mods' advancements are recognized by the AI.

Touhou Little Maid's Function Call option has to be switched on before letters can be generated by AI. The author recommends AI generation, which uses in-game environmental data as prompts so that letters adapt to different situations. Players can also press T to talk to a maid and request a letter through AI dialogue. The source code, issue tracker and wiki are public, and the mod is open source under the MIT License. Files are published for Fabric, Forge and NeoForge, for 1.20.1 and 1.21.1, and it runs on client and server.