Female lead of Chuunibyou demo Koi ga Shitai!.
She has one blue left eye while her right eye, which she calls the "Wicked Eye" is covered in an eyepatch. This eyepatch is used to prevent the "Wicked Eye" from glowing too much, although this "Wicked Eye" is simply a yellow glowing eye (it's actually a colored contact lens) much like Sakamoto Mio from Strike Witches, hence revealing the heterochromia.
She has short dark blue hair which is tied up on one side.
She wears a female version of her school's uniform: a red plaid skirt, an ascot, and a blazer-like blouse.