Purchase MisericordeThe mega nun VN. Set in a monastery, you play an anchoress (a woman locked in a room for her whole life to study the bible) who is suddenly forced out of her room in order to solve a murder mystery. The mystery gets very weird and almost isn't the point! Very well written, looks and sounds very cool, main charicter is extremely messed up as you would expect considering the situation.
The volume two just came out and it's more of the good stuff! And the game is on sale! So it's a good time to give it a try.