Forceful Gratitude

Qing Li rescued an injured puppy and brought him home, bathing him every day and holding him while he slept. But one day, he suddenly disappeared. Not long afterward, a remarkably handsome man came to repay the favor. Qing Li: "Repay what favor?" Wolf King: "You saved a wolf six months ago." Qing Li: "No, I didn't." Wolf King: "Xiao Hei..." Qing Li: "..." There are countless ways to repay a favor. Why did he have to offer himself in return...?