These characters give effects when interacted with.
These are other NPCs that can be found wandering Sometsuki's dream world. Note that most of the names listed here are not official.
A girl dressed in a green school uniform outfit. She resides in her room, where she can be seen doing various things while re-entering her house. Sleeping in her bed gives the "green" Window Type and she is attracted to the Rabbit and Ribbon effects.
A boy found sitting at the edge of the Cliff of Memories, who will turn towards Sometsuki when he is sat next to.
A girl found in Snow World, the Countryside, and in front of the Shrine Labyrinth. She gives the "orange" Window Type when interacted with for the first time. Her outfit changes with her location, either wearing a coat and muffler or a straw hat and collared shirt.
Various schoolgirls that can be found in a variety of worlds. When they are hit with the Nail Hammer effect, they become bloody and enraged, chasing after Sometsuki and trapping her in isolated locations. Some of them can be found in already-enraged states.