is one of the main characters, classmate and friend of Hitori Bocchi. She is the Vice President of 1-1.

Honshou Aru has brown hair tied up into a high ponytail with a red scrunchie-like hair tie. She has bangs and two thin strands of hair framing her face, with green eyes. While not particularly defying school dress code, often wears a woolen, buttoned sweater over or instead of the regular school uniform. She has a medium length skirt and tights. Furthermore, she also wears a small red ribbon on her chest brown shoes to complete her school uniform.

Having only properly met each other at the stairs of the school, Hitori Bocchi and Honshou Aru had their first actual introduction whilst Hitori Bocchi and Sunao Nako were in a small quarrel over a minor misconception. Even though Aru was only trying to do her job as the "perfect class vice president", Aru's assistance in this quarrel did result in Bocchi wanting to be her friend. Bocchi quickly won her over after a small discussion. Bocchi and Nako were also the first students in their class to realize Aru's unfortunate nature.

Meeting each other through a common friend, Hitori Bocchi, these two usually don't really go together. However, when together with Bocchi they usually try to act up and be good friends with each other for Bocchi's sake. They mainly don't really like each other because Nako points out all of Aru's flaws whenever she can, most prominently calling her "You" instead of "Aru" and describing her as an unfortunate person to tease her.

When called "Unfortunate", especially by Sunao Nako, Honshou Aru gets really worked up to the point that she vertically jumps up against her.

Her name can be roughly translated to "has a hidden character", hinting at how she doesn't show her real nature to most people.

On one of her loser-streaks, she wore her elementary school uniform to school. She pretended to be her own "little sister", Honshou Mieru, meaning "Hidden Character is Visible"

Ever since she was born, she has always been called a loser.

Don't lose, Aru! Shine bright, Aru! is her theme song.

While always being cheerful and flashy, Honshou Aru is seen by everyone as the "perfect girl" with no flaws, mostly because of her status as the class vice president. However, her more close friends would know that she's actually quite clumsy, forgetful and unfortunate.