Risa Ai

A lonely university student develops a romance with a beautiful interesting woman, who turns out to be a cyborg from the future.

While combing through the belongings of his recently deceased aunt, Matsuko, nephew Sho pieces together the crucial events that sank Matsuko's life into a despairing tragedy.

Hayato Akaboshi quits racing cars and settles in a village when he accidentally kills another driver. He works at a garage and turns its fortunes around, making the owner of another garage jealous.

Set in a virtual simulation of Shibuya, Tokyo which is regulated by an entity named Piece which does not allow inhabitants to live, the series focuses on a fifteen-year-old boy named Tsuyoshi who seeks to find both his lost memories and a way to escape Shibuya. To maintain control, Piece locks "kills" those who do not operate within the proper confines of the world, which results in their being reset and inserted back into the city with a new name and identity and without their previous memories.