Du Beonjjae Saebyeok

For the past ten years, Baek Ha-Yeon has been living in guilt for ruining the life of his love, Yoon Yi-Han. Because of this, he feels he has no right to object when Yi-Han wishes to continue their relationship despite getting married. At the same time, Yi-Han’s cousin, Yoon Jin-Woon, has been using their secret as leverage to get Ha-Yeon to sleep with him since he also has feelings for him. Just when the lives of these three seem to have gotten so irreversibly tangled, Ha-Yeon is sent ten years into the past before the biggest regret of his life occurred. Though he is determined to alter the course of this timeline and save Yi-Han’s life, he wants to keep ignoring Jin-Woon’s blatant feelings for him. However, when Jin-Woon offers to help Ha-Yeon avoid the very cause of his problem, the two become entwined all over again… (Source: Tappytoon) Note: Includes four extra chapters.