Senki to Yobareta Otoko, Ouke ni Ansatsu saretara Musume wo Hiroi, Issho ni Slow Life wo Hajimeru: Innocent Days

A renowned mercenary nicknamed the "war demon" fakes his death after an assassination attempt on the night of a peace agreement. He returns to his hometown to live in obscurity and discovers a young girl named Maria, who immediately addresses him as "daddy." Now, the battle-hardened man must take on the role of her guardian, beginning a quiet life with a child despite having no prior experience with parenting.

Isinasalin pa — orihinal na teksto sa English.