Akari Kirishima

Akari Kirishima is a major supporting character in Nyan Koi anime and manga. She is the daughter of Keizou Kirishima (a Buddhist monk) and the younger twin sister of Kotone Kirishima. Akari is a freshman in high school who is very close to her sister but doesn't associate with other classmates, until later on in the series. She seems to be very possessive of her sister out of fear of losing her after her parents' divorce, which is why she was more hostile towards Junpei Kōsaka at first. As opposed to Kotone Kirishima who seems to be more quiet and outgoing Akari is shown to be shy in social situations, as well as being loud, irritable and rude (usually towards Junpei) but acts like this towards him because she doesn't know how to properly deal with people other than her sister as a result of her avoiding association with other children.