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He is a smart and serious high school student who is constantly annoyed by Yoshiko's antics. He is Yoshiko's neighbor, childhood friend, and classmate.

Akuru is an intelligent and serious high school student who is forced to deal with Yoshiko Hanabatake’s stupidity. Though only interested in studying, he is unwittingly dragged into many of Yoshiko’s escapades much to his dismay.

Throughout the series, Akuru is seen as the straight man, constantly dealing with the eccentric personalities of those around him (especially Yoshiko) and is quick to make rude remarks. He is very upfront about his disgust for Yoshiko, often resorting to physical violence whenever she annoys him.

Despite this, Akuru is said to be strange himself as he is completely antisocial, having few friends due to his abrasive attitude. The only people Akuru gets along with is Sayaka Sumino and Dog who are the only beings besides him to have sense.