Masumoto Kira has caught the attention of everyone since the Sakamichi Joint Audition's SHOWROOM broadcasts with her antics, like attempting to drink water bottle while blowing a trumpet. Like Akiho, she quickly showed her colorful individuality in variety shows. Kira has the tendency of speaking what she has in mind, which often results in unthinkable remarks- although she herself does not understand why it is weird. She is fond of playing with the members, both her seniors and genmates, and has even challenged Akane to a sumo fight. A bundle of chaos and joy, Kira will surely find a way to make you smile and laugh. Kira calls her fans "Kira no Nakama."