Kei Kikuno attends a vocational school as a student. For her part-time job, she works as a contract killer. She is excellent at her job and never...

Students, including Aoi Nishino, take part in class and sports activity at a prestigious high school. Aoi Nishino is a member of the school's...

The main character, Nao, was looking for a man who was based on the letter of his late mother. Along the way, Nao runs out of power and collapses...