(???)-chan

(???)-chan is a classmate of Tsumiki's. When she is introduced by Nelly Smith, Nelly incoherently mumbles her name, and it appears in the subtitles as (???)-chan.

Appearance
(???)-chan has blonde hair that she wears in a bun, with two long strands on either side of her face. She also wears an indigo bow in her hair. Her eyes are baby blue.

Personality
(???)-chan seems disinterested in everything. She never speaks, only mumbles and grunts, and her expression is usually a frown.