The story revolves around the love, friendship and relationships between four characters who meet by chance.

Born in a family of delinquents, Nanba Tsuyoshi is expected to succeed as the strongest delinquent in school. Unbeknownst to his family however, he decides to enroll in the top high school in town to live as a normal high schooler. Can he maintain his double life as the strongest delinquent in town and as a normal high schooler?

With graduation 10 days away, homeroom teacher Hiiragi gathered all 29 students of class 3-A and proclaims them his hostages. His last lesson regards the death of a student that passed away a few months before. Nobody will be able to graduate until the truth is known.

As a 24-year-old woman, Ogata Makoto doesn't like to show her true self or draw attention to herself in her private life or when she is at work. This is because she doesn't want to be disliked. One night, Ogata Makoto had an accident. The accident causes her to lose the memory of herself. She finds a male ring in her bag, but she doesn't remember who she was going to give the ring to. Soon, three men appear in front of Ogata Makoto, and the ring fits perfectly on all three of them. One of them proclaims himself as her ex-lover, one man claims to be her only male friend, and the other man claims to be her man of fate. Each of them has their own lies.

The street fighters of Oya High and the delinquent brawlers of Housen Academy face off against each other when both seemingly attack each other.

Two detectives communicate through a walkie-talkie to solve a cold case. One detective exists in the present day, and the other detective exists 15 years in the past.

Wako Taira is 31 years old. She works part-time at a cinema close to her home. Her boyfriend is Fu-kun and they have lived together for three years. She has never thought of breaking up with her boyfriend, considering her age. One day, she meets high school student Yumeaki Iko. She can't resist him. Wako Taira has an affair with Yumeaki Iko.

One day a mysterious box arrived and a curse began to spread all over. The source of the box is 'Jukai Village'. The village is hidden in Jukai Forest, a suicide spot that once you enter it, you can never come out.

Machiko can't shake the feeling of emptiness in her day-to-day life as a manager of a clothing store in Aoyama, Tokyo. One day, the casual words of Sayaka, a younger and charismatic store staff, stirs Machiko into creating a secret...