Harume-chan is an evil mastermind!!!

Harume Makahiya is a shy and timid girl who is beginning her first year of high school at Futoshi high. Everything is as it should be, she wants to make friends, everyone is fun and unique, teachers are friendly and nice. There is absolutely nothing to worry about, right? However, a big caveat to Harume is her split personality, an evil and menacing version of her bent of taking over the world. Bouncing between Harume the straight A student and Harume the maniacal supervillan, she must learn to the tricks of the trade of balancing high school and her social life.