Crimson v0.4.1 by Vertigo Win/Mac/Android - Adult Sex Game

As a freshly promoted detective it is upon you to solve the cruel murder of a young girl at a local all-girls high school. For this you are forced to spend a lot of time with her classmates and other quirky characters.
Poor guy.
Just having escaped it yourself you need to delve back into the jungle that is high school life, where you'll find yourself confronted with secrets left and right. Uncover and use them to your advantage and you will have many opportunities to get closer to the girls.

Also there's a crazy person around, so beware!