Hina grew up in an all-girls school. One day, she transfers to Ocha Gakuen. Ocha Gakuen is notorious for being a former all-boys school. Hina's grandpa happens to be the school's director! Two of the strongest boys in the school are assigned to protect Her. Kei is a cool, foul-mouthed young man and is the student council president. Haru is a handsome flirty vice-president who loves girls. While being protected by the two strongest boys in the school, Hina ends up saving the school from a pinch situation as a member of the student council...!?