With the arrival of three chaebol members into general high schools, teachers and students will be transformed into " brain fighting " schools that seek power by surrendering to massive capital. Dan-geon, a genius, came to inherit the school's rules.
The story follows a team of mercenaries known as Lagoon Company, who smuggle goods in and around the seas of Southeast Asia. Their base of operations is located in the fictional city of Roanapur in Thailand, and they transport goods in the PT boat Black Lagoon.
Meet Raizou Hiraga, a retired officer from the Tokyo Metropolitan Department. After learning that his grandson is stuck with a deadly illness that requires expensive treatment, Raizou comes upon a job flier for the mysterious SS Agency.
The "erotic comedy" manga centers on Ayane Kurozumi, a beautiful detective who has legs that can take anything down. She takes various jobs so long as she gets proper monetary compensation.