[The one I loved has died. He smiled as gently as the spring sun.]

Ritsu, a university student, is tormented by loneliness and regret after the sudden death of the person he had a crush on. At the funeral, he is reunited with his childhood friend Hinato, with whom he had a falling out two years ago. When Hinato says he wants to make up, Ritsu accepts his apology, and the two of them grow closer again.

However, Hinato has a serious secret—?

A story of two people who take a step forward in a new life, where their existence gives each other courage and hope, begins now.