Sugiura has had a secret crush on his senior Yui for a long time; he was stunned to hear that Yui would quit her job and prepare to get married. But by chance, Sugiura discovers Yui arguing with her fiancé. Unable to contain his emotions, he wants to bring happiness to her, wants to claim her as his own, so he forced himself on Yui while they were both working late. Feeling Sugiura's affection and troubled about her fiancé, Yui invites Sugiura out for drinks, and then they make love at Yui's place. However, Yui will not abandon her current marriage; she will still quit her job and get married, becoming a housewife...

ADN-541 The senior is about to get married in the hotel.