Sugihara, a North Korean, began studying at a Japanese high-school. Since his father was an ex-pro boxer, Sugihara knew how to fight other Japanese boys who challenges him to a fight because of his nationality. At one party Sugihara meets a girl who would only let him know of her family name: Sakurai...

From Fallen Syndicate:

On her first day as a police academy trainee, Haruna is assigned to keep an eye on Ishikawa Ango, a driven and resourceful detective who has recently survived a gunshot wound to the head. What Haruna doesn't know is that the incident has given Ishikawa the ability to see and communicate with spirits of the victims, making him even more determined to use his special ability to catch culprits.

A salaryman's life gets turned upside down due to a dramatic tragedy, and now he is going to have a summer adventure the entire city will never forget.