Gajogui Geuneul Arae

It's been more than 10 years since Hae-Ju, who became alone, became Se-Ryeong's family. Se-Ryeong had feelings for Hae-Ju that he shouldn't have, and he started to feel resentful toward Hae-Ju, who was paying less and less attention to him. Unable to bear it any longer, Se-Ryeong crosses the line he had been keeping and asks Hae-Ju to help him masturbate. Hae-Ju can't refuse Se-Ryeong's request...

(Source: Mr.Blue, translated)