|Novel||Jinsei Reset Button|
Natsuki Sugita (杉田ナツキ Sugita Natsuki) is Yuuto's childhood friend.
- Natsuki wears the girls' version of the school uniform, with a red bow replacing the tie and a black skirt with thigh-high socks. She has short ginger/brown hair and wears four white hairpins.
- Natsuki has known Yuuto since elementary school. She's in the school's volleyball club, and she has a very straightforward personality. She likes children and to help others.