Kyosuke and Mariko live modestly but bravely. They are siblings alone, without parents. One day, the younger sister decides to get married, and happiness finally comes. Her partner is a rich young man. It was the best time for them. However, the younger sister's body is discovered. It's a rape and murder. Kyosuke is crushed by grief and doesn't know what to do. The police are investigating the matter, but... see more