Gyeote

Brought together by fate.
Hyungbae is a bit of a workaholic. Underappreciated and overworked, he feels burnt out at his current job. Enter Deokbae, a carefree dog that has a mind of his own! Follow Hyungbae and his canine companion as they navigate the ups and downs of life, bringing a whole new meaning to the word "family."

(Source: Manhwakyung, translated)

Note: Chapter count includes an epilogue.