Chizuru Hishiro

Hishiro Chizuru is a third year student at the school Kaizaki attends after he became a teenager.

Appearance
She is slender young girl with black hair and light green eyes. She wears the 3rd year uniform with a red lapel that all third years wear. She also has a silver lapel pin after becoming the Student Representative.

Personality
Kaizaki notes she has a clever,smart atmosphere to her. Hishiro is highly intelligent, always seen getting the first place in any exam. Inspite of her intelligence, she is highly oblivious of her surroundings and people's feelings, openly voicing out insults when she first talked to Kaizaki. She has a habit of people by names like calling Kaizaki "The Cigarette Guy" and Kariu as "The Red Haired Girl who did 7.38 seconds" because she does not know the name of other students in her class. She also does not know how to smile properly, often giving a forced smile that often makes people around her not taking it in a friendly way. She wants to get people more and make friends as she has reached the final year of school. She often searches the Internet about things she does not understand and tries to follow the tips given there.

Relationships
Kaizaki Arata - Kaizaki was the first friend Hishiro made. He helped her out during the first day by loaning her lunch money. She comically asked him for his number by asking for his phone. He was the only person around whom she first gave a proper smile. After interacting with Kaizaki, she has fallen in love with him, although she isn´t aware of her own feelings.She wants herself and Kariu to be wary of Onoya An whom she thinks is very close with Kaizaki and Ohga.

Kariu Rena - Rena considers Hishiro a rival in academics. Hishiro tries to become Rena's friend by smiling at her, but Hishiro's smile looks like a smirk to Rena creating a lot of misunderstanding. After some time they become friends and eat lunch together.

Honoka Tamarai - Hishiro becomes friends with Tamarai through Rena.