Haruki is a tomboyish yet fashionable girl who is always shown eating snacks, especially Pocky (disguised as "Rocky" in the anime). She is also the typical lazy student who sleeps during class, but is willing to help with school activities where she is able.

"Hi nice to meet you my name is Haruki Sagae you can call me Haruki or sagae if you want to i don't mind... Do you want some pocky?'