In Season 1 Episode 4, Hanamaru stated that since she was a child, she was quiet who played off to the side. Hanamaru has a distinctive verbal tic and dialect, tending to end her sentences with 'zura', as well as using 'ola' as a first-person pronoun referring to herself. She is also shown to have a large appetite, able to eat a food helping quickly and often asking for another one immediatly after, and is usually seen eating a roll of noppo bread.

In the anime, Hanamaru is also shown to have a playful and mischievous side of her when she teases Yoshiko's Fallen Angel behavior and her embarassing moments (often alongside her best friend Ruby), which annoys Yoshiko all the time. However, after learning about Rin Hoshizora and how she once felt the same, she was inspired, then decides to be a school idol by supporting Ruby in her endeavor. Due to how sees herself, Hanamaru didn't think she was fit to become a school idol. Hanamaru seems to be quite self-depreciating, calling herself a 'chibi procrastinator' and 'neither cute nor interesting'. She aspires to be like Ruby, whom she sees as 'beautiful, cute and dazzling'. She is gentle and caring for those around her, but often finds herself going in circles anyway. She was often teased due to this, but was usually defended by her best friend Ruby however, Ruby ended up crying at first, causing Hanamaru to comfort her instead. Hanamaru also usually yells 'Mirai zura!', which means 'Future zura!' when she sees something like a computer. Because of how she was raised as temple girl, she does not watch the television much nor does she use the internet, making her outdated. She depends a lot of time reading alone and is easily distracted.

Hanamaru, known as 'Maru' for short, is a hardworking girl who diligently works at her family's temple. Since she does not have a computer she often reads a lot. She attended the same kindergarten as Yoshiko Tsushima.

She is a first-year student and the daughter of a family who has run a nearby temple for genertions.

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