She is the 2nd to eldest of the Amatsuka siblings, she is a 1st year student, unlike her elder sister Mao, she is a matured, patient and a refined girl who has a talent for knitting and baking. She is always seen serving tea and snacks to the club members and does the clean up as well.

She is pretty much insecure when it comes to her weight.

(Source: Otaku-streamers forum)