In Mayo Chiki there is a really popular butler that is loved by all the girls but it turns out he is a she and this one guy finds out. He is a Gynophobic (Scared of girls) and in exchange for not telling anyone he is a she they will cure him of being scared of girls. Then they fall in love and everyone thinks he's gay. It's really fucking funny.
In corpse party they go to a different world that is haunted by children and they are all brutally killed and they have to release their spirits. SUPER SAD AND DEMENTED AF!