[TITLE] Help Find Manhwa Title

Hello! Please help me find this manhwa.

I don't remember any of their names, btw. But here's how the story goes (kind of):

The story is about a guy who disappeared for years after going to that hole of monsters or something. The people presumed him as dead and he somehow became a hero (?) for his deeds.

But then he came back after many years, though he doesn't want others finding it out.

After coming back, he started working in a restaurant with a grandma and a kid (not his real family).

Famous people with great powers come to his restaurants daily. Especially that other guy with venomous power (people can't get close to him because his power spreads). That guy knows he's strong.

One time, they held this ranking thing about people with powers. His name showed up on top of the list or something, so the people are confused since he's supposed to be dead, right?

The last thing I remember is the venom guy and another guy going in front of the sea to check for that very hole that took the MC in since it's showing signs of coming back (?).

That's it. Thank you in advance!!