Sake to Joushi to Amai Kiss

Momose begins working at his father's company, expecting to report to an attractive supervisor, but instead finds himself under the leadership of the unremarkable and older Nishina. Following a welcome event, Momose becomes heavily intoxicated, and Nishina allows him to spend the night at his residence. The next morning, Momose wakes with little recollection of what occurred the previous evening, leaving him uncertain whether their time together went beyond playing video games.