- The frog falling in love with Viola after she nods 'yes' to liking frogs.
- In the Diary of Ellen's backstory, she (already a witch by that point) befriends a boy and they become good friends, only to reject her after he accidentally sees her true sick body. Feeling betrayed, she makes the house kill him afterwards. Then it's revealed that all the invisible residents of the house are leftovers from souls the demon ate. The boy is the invisible person in the library in the game and doesn't seem to attack Ellen in Viola's body. Also, while Ellen has long ago forgotten about said boy, a part of her still remembers him somehow."I couldnt particularly remember the voices of everyone Id played with, and they all seemed to blend together. But just looking at his kitten-soft hair seemed to calm my heart."
- Just the whole idea of being trapped in a house where everything's trying to kill you with no way out and no way forward but towards the one who presumably created and controls it all. The novel reveals that the monsters are people killed by Ellen in the past who just want their revenge. What makes this oddly heartwarming? The Librarian, aka the little boy who was Ellen's first friend and victim in Diary of Ellen never seeks to hurt or kill her, despite Ellen being responsible for his death.
- The MV remake adds one with its Extra mode, the tadpoles survive when you wash the red shoes in the river. If you interact with them afterward, they will immediately break the tiles apart and drown you even if you have not talked to them before.
- Another easily missed addition to the Extra mode - immediately after escaping the house, after collecting Ellen's Knife, if you interact with the house before progressing down the garden, a ghostly little sprite of Ellen will appear floating above the house, smiling and waving to you, as though congratulating the player for beating the Extra mode.
Heartwarming / The Witch's House