The noble and beautiful strongest female investigators fall into a trap and surrender in loser style with their asses exposed! - When the enemy fucks me from the back and complains, "I'm here! I'm cumming!", the enemy gets excited by those words and follows up with a piston, and in the end...! - Introducing an omnibus work about such an ass fetish investigator! - Starring 4 popular actresses who have a reputation for their butts and sensitivity! - This is a long book that you can enjoy a lot!