Here's Tetote Connect! first, download the game.
https://pixeldrain.com/u/Z6kpPhxS
next, download and extract the BeplnEx into game root. then, open vision.exe.
https://github.com/BepInEx/BepInEx/releases/download/v5.4.23.2/BepInEx_win_x64_5.4.23.2.zip
finally, download and put the tetoco.dll into to the plugins folder in the bepinex directory!
note: when you launch the game withuout tetoco.dll at the plugins folder in the bepinex directory. it will have a 202: backup error.
https://github.com/Redcrafter/tetoco/releases/download/v1.0.2/tetoco.dll
have fun!