A friend is bloody at her feet, and both her hands are bloody. What happened to Yuka who stood on the edge of the park? My friend Miki disappeared that day. Miki is alive that it is not an incident! ? What happened to Yuka at the time of the incident? What is the true identity of the birds that appeared around Yuka after the incident?

The twin sisters Harumi and Natsumi, who were born in the Adachi family, got separated in a fire when they were young. Harumi grew up as a young lady in Tokyo with a dog as a friend, meanwhile Natsumi lives with her grandfather in Miyama. Can an older sister, who thinks her sister is dead, meet her again?

Mou-chan, who has a big body but kind, is the target of bullying, and the friendship with his classmate Hirose who protects is drawn. Mou-chan and Hirose appeared in Playball 2.