A few tools for the AST scripts of Trouble Days and Nin Nin Days (and maybe other Artemis or Kirikiri Engine Visual Novels from Qureate) Basically, they're tools for modding the game. I made a mod to prove that it is possible to mod the game.
Please do not claim these as your own. If you have any questions or ideas for AST tools, feel free to create an issue here and I will help you.