Kinoshita Mairu has a cute name and she's apologetic for it, because she's ugly. In fact, she's apologetic for her very existence because she's not cute. Classmates call her "Poison Mushroom" behind her back and even her own brother treats her with disdain. However, all of that is about to change with the help of her transgender mentor/neighbor, Fuwari-chan, and the "school…
SATO Zakuri
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From Shinnen:
Since childhood, Neiro has been known for being good at fighting, making people fear her and giving her the title of Kansai's strongest woman. Wanting to find romance, she decides to transfer to a high school in Kanto. Instead, what faced her was a specially assembled class of delinquents.