I’ve read a manwha about a guy getting locked up somewhere and he thought he was kidnapped but this other guy who lived there his whole life. He thought that guy cut off his leg so that he could not escape but the truth was they are living in an apocalyptic time and it was necessary to amputate his leg because it was in a bad state. Please help me with the title i couldn’t find it on my suggestions anymore

Hey guys! So, I read this manwha but I forgot to save it. So basically, there’s this guy who moved into Korea with a baby from his ex after military in America. The chief of the town was tough at first but ended up falling in love with our baby daddy. The town chief owns a convenient store and some old grandma steals chocolate for hir granddaughter. Then at the later chapters there was a land slide or a storm that caused a landslide and this man was like literally good at everything keep the town functioning and stuff. Also the town chief’s mom is dead and his is American and basically his dad got cancer (i think?) and left to get treatment but ended up getting amnesia. The chief town had long mullet dark hair, and he got slight pointed ears? And then the baby daddy is tan, and really kind chill?
Anyway, I can recall the story but not the title. I think it was also complete too but I don’t know. I would appreciate help thank you.
It's "Our Sunny Days"
https://www.mangago.me/read-manga/our_sunny_days/
Thank you lovely, may you be blessed abundantly!
You're welcome(≧▽≦)