- Fan-Preferred Couple: Due to Shizuka being the Only Sane Man and comedically bantering with Yuuya as their friendship grows, the majority of fans believe that she would be better for him than the cast's various yanderes, even those who don't actually ship them.
- Just Here for Godzilla: Anybody who hears about this visual novel are automatically interested in the Yandere love interests. Unfortunately, each route establishes the harem heaven part a little longer than anticipated. While the Fanservice is acknowledged and appreciated, the story before the actual yandere section takes several hours.
- Tearjerker: A few.
- Haruka's backstory. When she was a little girl, her father abused her and her mother. Her parents ended up getting a divorce and Haruka became afraid of men. She carried a bat with her, wanting to protect herself and her mother. When Yuuya meets her on the playground, she freaks out and starts hitting him with her bat. Despite her fearfully aggressive behavior, Yuuya kept trying to talk to her. He managed to get her to realize that not all people, and men, were like her father. This led to her crying and apologizing to him and the two of them becoming friends.
- What an Idiot!: Sure, Yuuya. Don't try to stop your best friend who's holding scissors near a girl's neck and wearing a Slasher Smile with Wide Eyes and Shrunken Irises to match. She's totally not going to stab her in the neck or anything.
YMMV / My Harem Heaven is Yandere Hell