If you have a question about how to find a certain ending or CG, go to the game's official forum. You may find the answer there already.
If your game doesn't work, crashes, or has bugs in it, post a new thread in this forum. Be sure to include which game you're having trouble with along with your operating system information and where you purchased the game (sakevisual's website, itch.io, Steam, MangaGamer, or at a convention).