Daremo ga Kanojo wo Neratteru.

Ayano Shirasaki, the student council president of Naginohara Private Academy, and Takumi Mamiya, the morality officer, have been childhood friends for as long as they can remember. After ten years of closeness, Takumi finally confesses his true feelings, and as winter gives way to the new year, they become lovers. Forced to keep their relationship a secret due to their positions, they steal kisses and continue dating, believing their storybook romance will last forever.

With only six months until graduation, the couple enjoys their happy days, unaware of the dark forces gathering around them. Envious eyes watch their open secret of affection, including a thug with a powerful father, a student bullied by that thug, and a janitor whose friendly demeanor hides his true nature. Their hearts broken and hopes dashed, someone plots to destroy the couple's happiness—but whose scheme will succeed?