One day, Maru, a straight girl who is clumsy in love, witnesses a molester scene on a train! When he repels the molester with the handsome boy he met on the spot, he suddenly confesses "Please go out with me". In fact, he was a famous "perfect" senior who attended the same school! At first, Maru refused to confess, but he was attracted to his sincerity and kindness and suggested "Why don't you start with your friends?" However, friendships that are "premised on romance" are much sweeter and more annoying than I expected. A romantic comedy with a high sugar content that is cool to other people, but is only attacked by older boys who are sweet and gentle to you.