Neukdaesayugilji

Tae-Hwa, a werewolf, has his coming-of-age ceremony and descends to the human world, enjoying campus life. However, after drinking alcohol at an OT, he flashes his ears and tail in front of Se-Hui! Se-Hui, seeing this, finds it amusing and begins to torment and obsess over Tae-Hwa as if he were his own puppy...

"Tae-Hwa, be my pet dog."

(Source: Bomtoon, translated)