Mizuki finds out from Sudo, a junior colleague at work, that he is gay. Due to a traumatic experience in the past, Sudo orders him to ‘become my pet’. He rebels, but when Sudo tries to hold him as if to torture him, he uncovers his secret, abusive sexuality. Although Mizuki has only had experience on the tit side, he soon begins to desire to be caressed. Then he is reunited with Kagami, the man who had cruelly dumped him...