Yui Kanakura
かなくら ユイ
লিঙ্গ: Female
বয়স: 19-20
♥: 71
Height: 167 cm
She is a childhood friend of Raku as well as his current homeroom teacher. Yui is also the head of the Chinese mafia group, Char Siu. Yui is also in possession of a fourth key but has confirmed to Raku that she is not the girl he had made a promise with ten years prior.
