Sumi Takaoka

She has a huge crush on Sudou Mitsuru. Using her fathers newly developed growth hormone medicine in hopes of transforming into a flasher eyecatching woman in order to get Mitsuru to notice her she instead becomes stuck with the dilemma of changing into a man whenever her heart beats faster and becoming excited near Mitsuru. However as a man she is prone to acting quotcoolquot with charisma toward people therefore attracting a lot of attention including those of Kyouokosensei and Mitsuru. She learns she has to get to know Mitsuru first before knowing what type of girl he likes after hes rejected by Miyochan. She supports him as he likes the female Hozumi but as Hozumi only wants to be friends with Mitsuru after all. She starts to fall for Nishiziwa afterwards and cant decide between Mitsuru and Shizuka. source: wikipedia CUTExGUY