Chiyuki Kuwayama: Chiyuki in a unit called "ALSTROEMERIA" consisting of Amana and Tenka. Despite the three of them having a family-like atmosphere and Tenka and Amana being twins.

Amana Osaki: Tenka Osaki's younger twin sister. Amana is a selfless girl who wants the best for everyone around her.

Tenka Osaki: Amana Osaki's older twin sister. Tenka is a shy girl with a rather low self-esteem that thinks that she isn't cute and even good-for-nothing, but seems to have a desire to change herself.