Bammeokgogara

Kang Cheol-Ho, the strongest man who was summoned to another world and defeated the Demon King after a fight. After returning to Earth after 30 years, it is the era of Raid. Kang Cheol-Ho is tired of the repeated fights and does not want to fight anymore. So he opens a restaurant, which was his old dream, and wants to live quietly. Stories of the customers who visit the restaurant, and stories of people living.

(Source: Naver, translated)