Mogi, Natsuki

Takumi's love interest.

During the first season,

[Spoiler] it is revealed that she was in a sugar-daddy relationship (enjo kousai) with a middle aged man driving a white Mercedes. [/Spoiler]

During the second season,

[Spoiler] she is still dating that same sugar-daddy after kissing Takumi in the first. She, while trying to end that relationship, got caught by Takumi. She put herself back on track by working part-time. [/Spoiler]

In the movie,

[Spoiler] she tries to make amends with Takumi, but they split apart as she decides to go to a college in Tokyo. [/Spoiler]