Haruka Bokerdole "MathsHaru"

Haruka Bokerdole, ironically nicknamed as "MathsHaru" by ParaHaru, is a vocal doll from another universe, thus making her one of the few non-parallel Harukas whose worlds are completely different.

She is known as a prodigy and for her very calm attitude, which earned her the title of "Army's Grandma".

Surprisingly to the whole Haruka Army, she's a Celeb idol.

Appearance
Green and dark blue-grey hair tied in a side bun, with dark blue eyes. Haruka often wears her violet glasses and matching clothes, to the point that with her hair out and without glasses people don't recognise her.

Personality
Laid back, slow, a bit of an air-head and relaxed, Haruka is very diligent and is great at maths. She never really gets angry for something, but you can get her upset by not studying, even though she acts like a teacher sometimes. She has no interest in idoling, however, she likes watching her friends' shows.

She could fall asleep everywhere.

Trivia

 * She's the oldest Haruka by a year.
 * She doesn't plan on graduating after her third year, and will instead keep going to idol class.
 * She gets along a lot with MiraHaru, ever since MiraHaru "lost her purpose of being Haruka's senpai" and got depressed.