After My Frail Childhood Friend Became Bound to an Incubus System

My childhood friend, who had been frail and sickly since we were young, bound himself to a Succubus System at nineteen to extend his life. As long as he chose a target and completed tasks like kissing, hugging, and cuddling with them, he could keep living. To finish the tasks faster and more smoothly, and earn himself a healthy body with a long life, my childhood friend chose his best friend, Qin Lian, as his target. Seeing his friend's pale, pitiful face, Qin Lian decided to cooperate as much as he could when he heard the news. It was just a Succubus System. It was just kissing, hugging, and cuddling. For his friend's sake, Qin Lian figured he could do it. Later... After the two of them had kissed so much, sometimes they couldn't quite stop. His friend covered his red cheeks and made an excuse. “It's nothing. We must have been single for too long. We haven't been around enough, so that's why we're like this...” Later still... Sometimes Qin Lian couldn't hold back, and his friend would still foolishly make excuses for him. His friend said, “It's, it's okay. We're both men, after all. We used to share a bed when we were kids, too. I, I don't mind.” Qin Lian said with a serious look, “But I do. I'm yours now, so you have to take responsibility for me.” Theme: A bond that has lasted since childhood can sometimes be stronger than anything else