Suzu and Yuya are coworkers who clash because their approaches to work could not be more different. After a client dinner causes Suzu to miss the last train, she reluctantly spends the night at Yuya's place. More drinks turn their work talk into sexual banter, and as their insults grow increasingly heated, one of them finally snaps, "If you're so sure, why don't we test it?" Their unexpected one-night stand reveals perfect physical chemistry, giving Suzu the strongest orgasms of her life and sending them back for sex again and again despite her insisting she does not even like him.