Innocence is a fragile thing: A bitter realization which throws three people out of their everyday life. Hikari is a bright, happy teenager with a strong sense of justice. After she realizes that a classmate is getting bullied, she decides to help her by befriending the shy outsider. Suddenly tragedy happens – Hikari gets brutally raped in broad daylight. Her bright world sinks into darkness. Broken inside the only thing that keeps her going is the idea of revenge. Salaryman Yo on the other hand finally dared to propose to his girlfriend. By chance, they encounter a psychopath who indiscriminately attacks people with a knife. Bloodstained, Yo's fiancée collapses in his arms. And then there is the fatal car accident involving Kota, a young entrant, which completely shocks his sister Yuka. Three incidents which will have a long-lasting impact on the fate of the affected people.