In the first episode, the main character, who takes over his grandfather's model shop after he becomes ill, starts managing it with the assistance of Risa, a frequent client and an otaku who is obsessed with models and famous for her curvaceous figure. The shop reopens without any issues because of Risa, who is stern but reliable. The main character one day finds a unique solvent that his grandfather made. He is talking to Risa at the conclusion of the workday when he notices that she is changing clothing haphazardly. The protagonist unintentionally pours the solvent on Risa's body in a moment of recklessness.