Investigator Hikari began tracking a gang member to catch the mastermind of a human trafficking organization. A week of sweating profusely and days of fasting in a closed room with a broken air conditioner in the middle of summer... The two crossed the line, severing the tense thread and pushing beyond boundaries. Although they were on a mission, they forgot themselves and kept Ji Po suffocated with Jupojupo, and they tangled with each other brutally while sweating and exchanging bodily fluids. The relationship will end when the case is solved, but Hikari, who learned about the sexuality she truly feels...