Sono Kuchibiru ni Yoru no Tsuyu

Wada Tatsuki appears to be an ordinary bus driver, living a simple and peaceful life. He goes about his daily routine, interacting with passengers and colleagues, never drawing attention to himself. However, beneath this calm exterior lies a heavy burden he carries in his heart—a terrible thing he did in the past. The memory of that act haunts him, and he struggles to find peace, knowing that what he did cannot be undone.

One day, the man he hurt reappears, seeking revenge. Tatsuki's quiet world is shattered as he is forced to confront the consequences of his past actions. The encounter brings back painful memories and threatens to destroy everything he has built. As the two men face each other, Tatsuki must decide how to deal with the guilt that has defined his life and whether redemption is even possible.