|Occupation||High School Student|
|Family and Relatives||Oruha Hashimoto (sister)|
Natsuki Hosokawa (細川 那津希) is one of Yuuki Ashikaga's classmates and Roka Kitsuregawa's friends in Cross Days, as well as a member of the girls' basketball team. She's often seen in the company of Ruka Imagawa and Mugi Hatakeyama.
She's also Oruha Hashimoto's younger sister but has a different surname due to their parents' divorce many years ago.