At the end of one summer, two female college students tried to commit suicide on Rakubijima, an isolated island in the Seto Inland Sea. Why did they choose their own death? What happened in the "last day" they spent on the island? What is the "answer" you will give after tracing the memories of the two girls and knowing the truth and the ending...?

At the end of one summer, two female college students tried to commit suicide on Rakubijima, an isolated island in the Seto Inland Sea. Why did they choose their own death? What happened in the "last day" they spent on the island? What is the "answer" you will give after tracing the memories of the two girls and knowing the truth and the ending...?