From a family who are mostly composed of Alphas yet Dojin disagrees with the assessment that such a family is incredible because of that. He is also the lead singer in a band named "Distortion" which is his current occupation. Attending a friend's party he would later contemplate this as a bad choice because Omegas were also invited to that party. Dojin saw his friend, the one who hosted the party, with Hye-sung that he looked like an Omega. He love Hye-sung and he make a baby With Hye-sung.