Today the company welcomes a new employee, Kuroi is responsible for training her. From the first meeting, Kuroi was impressed by Riho's beauty. To celebrate the cute new employee, the manager decided to invite everyone for a meal after work. Because they stayed too late, Kuroi missed the last train. Not knowing what to do, Riho suggested he stay overnight at her house and take the first train home the next day. When he returned, Riho was wearing a revealing outfit that kept exposing her breasts in front of Kuroi! Riho noticed but deliberately got closer to him, inviting him to touch her breasts and have sex with her! Despite having a girlfriend, Kuroi couldn't resist Riho's beauty. The guilt made Kuroi's penis even harder. And especially, Riho let Kuroi ejaculate inside her repeatedly, something his girlfriend had never allowed!