Kawamoto, Hinata

Hinata is the second of the three sisters and a middle school student. She sleeps in late in the mornings until the very last minute and often makes bentos by herself. She calls Rei "Rei-chan." Like her elder sister Akari, she likes taking care of Rei. She has a strong loyalty toward her friends and family and aspires to be as mature as her sister when she gets older.

[Spoiler] Later, she graduates from middle school, enrolls at the same high school where Rei studies, and starts dating him. [/Spoiler]