SSS-Class Cafe in Front of the Dungeon

After working myself to death and getting caught in a dungeon break, I really died. But when I opened my eyes, I had returned to 3 years in the past! Good, this life will be different. Goodbye to wage slave life. I immediately resigned and opened a cafe in the shop my grandmother left behind. It's right in front of a large dungeon, so there are no customers, but it doesn't matter. What I want is a YOLO life of working two days and resting five! However...[Class: Awakened as Cafe Owner (F)][Skill: Acquired My Cafe in My Hands (Lv.1)][Quest: Start making 100 cups of mixed coffee (0/100)][Item: Mixed Coffee - Recovery speed increases by 100%]. I quit my wage slave life, but it looks like I'll become a coffee slave. Plus, there's a handsome regular customer(?) who keeps bothering me, and something feels off. I have a bad feeling about this. Could it be that the RPG game protagonist, who was just going to run errands, will end up getting involved in troublesome matters and fighting the Demon King? No, I won't. I don't want to do anything more than the role of the innkeeper in the beginner's village.