Looking for a manhwa

I’m looking for a manhwa. The uke was an s-class hunter who got trapped in a portal(?) for like 7 years? Everyone thinks the uke is dead, thinking he sacrificed himself to close the portal. The uke goes into a restaurant run by an old lady where he finds out it’s been 7(?) years. Then he goes grocery shopping and buys green onions. He uses said green onions to kill a monster. It only had like 3 chapters from what I remember. Pls help me find it!!!