- Maki-chan - Maki grants Natsuhiko's wish "To live in peace". Natsuhiko seems to be fascinated by Maki-chan's inability to comprehend the importance of others. Apart from that, he finds her to be a strange girl.
- Sora Fushimi - Sora and Natsuhiko have known each other for their whole lives. They attended elementary school together and now attend high school together at Kurihara East. They started dating when Sora confessed her feelings to Natsuhiko.
- Akito Mamiya - Akito and Natsuhiko became friends when they joined the same class. Natsuhiko remains unaware of Akito's true nature.
- Ruma-chan - Ruma is ordered to kill Natsuhiko and succeeds at doing so.
- Momiji Shidou - Natsuhiko's younger sister. Natsuhiko cares a lot about Momiji, even if she doesn't seem to like him very much on the surface.
- Jirou Asai - Natsuhiko dislikes Jirou; he believes Jirou is using Natsuhiko for his daughter's revenge and he tries to pressure Natsuhiko into writing an article about the Itsuki Shindou case.