Looking for a fantasy(?) manhwa with MC working in a hangover soup restaurant

I can’t remember the title, only some details:

- The MC was the most powerful guy who fought monsters(?) behind an anonymous name and he never showed his face to the public, but he “died” in a battle and woke up in his younger self’s body.
- Unfortunately the rest of his team are all dead and he has survivor’s guilt
- He wants to be lowkey in his new chance at life and works in a rundown hangover soup restaurant with an old granny
- The ML is also super powerful and younger and taller than the MC
- One day ML finds the MC fighting off some monsters or something and suspects that MC is a bigshot because MC handled it like nothing

And that’s all I remember… :D I think it should be specific enough tho