X-ui Mokjureul Jwineun Beop

Not a single day has passed by without Yeon-U calling her verbally abusive boss Jun-Hu Kang a “son of a b****”. After being cursed out for the millionth time, Jun-Hu turns into an actual dog. What's worse is that Yeon-U becomes Jun-Hu's owner, and the only way for him to temporarily turn back into a human is if she touches him. After internally cursing him 317,920 times, Yeon-U finally gains the upper hand against her supercilious CEO, who is now an adorable white puppy.

(Source: WEBTOONS, edited)