Arata Kohata

The unrivaled captain of the basketball club at Mato's school, who ends up scouting her for the starting lineup in an upcoming tournament. She has a crush on a boy from her class and ends up giving him a love letter.

Following the basketball club's trip, she finds out that her love letter was pinned to the wall at her school in order to make fun of her confession. Despite shrugging off the impact this event had on her and laughing it off, she collapses in the middle of the day and is taken to the infirmary.

In the TV series' finale, it's revealed she ended up dating her crush after all.