It's about a knight who retires and goes back to the village. He then realises that the village has summoned heroes residing there. All heroes have different abilities like super strength, medical abilities, etc. It is more of a slice of life kind of manga. I just don't know the name of that manga
This is The Suffering of Local Knight Hans, aka Chihou Kishi Hans no Junan
Sick of the trickery in the royal court, former knight captain Hans now serves at a remote station in the countryside. But his peaceful and idyllic days end when some Japanese people with superhuman abilities suddenly show up.
The synopsis pretty much matches everything in the question. The summoned heroes have various abilities, and super strength was definitely one of them. It's been a while since I read it so I don't remember the specifics of the abilities.