Rabi-chan

She is a high school student and a classmate of [Gamo-chan](https://anilist.co/character/145715/Gamochan), [Yoshi](https://anilist.co/character/145718/Yoshi), [Nagatoro](https://anilist.co/character/124696/Hayase-Nagatoro) and [Sakura](https://anilist.co/character/145716/Sakura), the latter two of whom she and her friend Nekoba seems to be pretty in confidence to, although they later started to occasionally hang out with the rest of the group as well.