Kotoha Nakayama (24), who has been working at SOD for 3 years, is now in a position to guide her junior colleagues. However, the new junior male employee is a total screw-up. He makes mistakes at work one after another. On top of that, he made a big blunder by only reserving one room at the hotel for the business trip... Nakayama ends up sleeping in the same room as the screw-up junior. A true story of the screw-up junior attacking Kotoha Nakayama while she's sleeping with a wrong rampage.