Kobayakawa is an unsocial student who lives an extraordinarily ordinary life. One day, he meets a pretty and popular girl named Hoshino who has a secret that nobody knows except her sister and her. That is, until he stumbles upon it too by chance. Her sister had been putting make-up on her every day. Now it's his turn to keep this secret and help maintain her social life!

Gaie Kensei is the son of a very popular and skilled kendo practicioner. He has the love for kendo in his veins. However, he's not skillful, he's scared to hit his opponents. One day, after being expelled from the kendo club at his school because of his lack of skills, he mets Ashihara Naoto, a skillful girl who will help him with his kendo practices. Will Kensei be accepted back at his kendo club, and how will Naoto be related to him, and to the kendo world?