Kyousuke Kousaka 高坂京介

Kyousuke is an average highschooler, has average grades, lives in an average family (upper-middle class with a father, mother and sister), and has average physical features. Currently, he attends an average high school with Manami and he begins the story as a first-year, but he becomes a second-year during the events of the novel. As far as future plans, he intends to attend the same local university as his childhood friend, Manami. At the beginning of the series, Kyousuke and his younger sister, Kirino, have a distant relationship. Kyousuke says that they entered a "cold war" of sorts a few years ago, but the details of this cold war have yet to be revealed.

Kyousuke is a good-hearted character and is extremely loyal to his friends and Kirino. He's willing to take risks for them and help them at any cost.