Rena Kariu

Appearance
She is a girl of an average build, slim and well developed.

She has pale blue eyes and brick coloured hair

we see her most in either her school uniform or her volleyball team jersey/gym clothes

Personality
At first when Kaizaki meets her, she is quite judgemental considering how on the first day he was caught with cigarettes in his bag, but she is considerate enough to lend him a pencil and eraser when he needed.

She is also shown to be quite proud of herself and always aims for the best in herself so when hishiro beat her in the exams for student rep.

she is also shown to be quite naïve when it comes to anything to do with romance, shown by her behaviour around Ohga.

History
In middle school she watched Tamarai play volleyball.

Story
She lends Kaizaki a pencil on his first day of school. She loses to Hishiro for best scoring girl on the exams for her class.

Relationships
Kaizaki Arata

Honoka Tamarai - Volleyball rival and friend.

Hishiro Chizuru - Academics rival and friend.

Kazuomi Ohga - Kariu has had feelings for Ohga since their time in middle school. She even had matching piercings with Ohga during this time. During the summer vacation, she decides to confess her feelings to Ohga but he confesses his feelings first. After being bashful for a while, they decide to become a couple.