One day, Maru, a straightforward girl who is clumsy in love, witnessed someone being molested on the train! After repelling the molester with the handsome boy she met then, the latter suddenly asks her "Please go out with me". Turns out, he's a senior at her school, who's famous for being "perfect". Maru ended up refusing him but as she became attracted to his sincerity and kindness, she inadvertently suggested "Why don't we start with being friends?" However, their friendship, premised on "romance", turned out to be much sweeter and more troubling than she expected.
This is a romantic comedy with a high sugar content about yearning romance as Maru is devotedly pursued by the older boy who usually acts coolly towards others but is only sweet and gentle towards her.