Sapphire Kawashima/Relationships

Kumiko Oumae
Sapphire gets along with Kumiko very well and they are close friends. Kumiko and Hazuki are Sapphire's first friends upon entering Kitauji. Sapphire and Kumiko support and care for each other, and they can freely talk about various topics and they trust each other.

Hazuki Katou
Sapphire and Hazuki are also great and close friends and they care and trust for each other a lot. Hazuki could openly tell Sapphire and Kumiko about her crush on Shuuichi. The two support each other and Hazuki can open up to Sapphire, like when she cried in front of Sapphire when she got rejected, and Sapphire comforted her. They can also talk about various topics with each other and Hazuki also seems to quite fond of Sapphire's younger sister. They are on good terms and share a close bond.

Motomu Tsukinaga
Sapphire takes Motomu under her wing when he joins her in the bass section. Motomu admires her abilities, and treats her with a great deal of respect. Sapphire whips him into shape, making sure he behaves well and is kind to the other members of his section.