Unfather manga summary: Kyunghee's strapped for cash and with classes about to start soon, he's running out of options. He was fine last year, Sihyun paid him well for his "company." But that ended not long after it started. The old man was clingy and the last thing Kyunghee wanted was a relationship. Things make a turn for the worse when Kyunghee meets his mother's new boyfriend, a vindictive Sihyun.