Daiya, a university student, desires a romantic partner and balances his time between academics and leisurely pursuits. When he needs to relax after a late night, he frequently visits Ohashi's residence. Since Ohashi lives alone, he relishes the independence, and his place is conveniently located. Fortunately, Ohashi is always prepared to assist Daiya. However, during one evening, Ohashi surprises Daiya by performing oral sex, causing him to experience a pleasing sensation.