僕が死んだことになったら、知らぬ間に彼女たちは曇っていた (Associated Names)

The protagonist, who wanted to leave this world as soon as possible, made a promise to himself to save five people as a form of atonement, and having successfully fulfilled this promise, he thought it was time to die. While wandering aimlessly in search of a place to die, he met a girl.