"I want to do a job that upholds justice." With that desire, Tsumugi became an investigator. She married her husband, who works for a peacekeeping organization and met him on the job, and everything seemed to be going well... But her husband, who was investigating an illegal sexual assault case by a certain organization, suddenly disappeared. Following a clue, Tsumugi infiltrates the hideout alone, and finds her husband, who is practically a wreck. Tsumugi and her husband, who is infected with a new aphrodisiac that is spreading explosively through airborne and mucous membranes, are forced to have mucosal contact (kiss)...