This is really fucking good, and 100% my jam. It's a slow burn story that starts out as an episodic, slice of life, slow life type series while gradually ramping up as more is revealed about the world and characters and events become more serious. It never completely ditches the slow life, though, as everyone always returns to the restaurant at some point. It's a thematically strong series with good characters, an interesting world, and excellent pacing. I especially love that it has the balls to not just dump the entire backstory and setting on the reader at the start, but instead leaves you with small hints and drip fed flashbacks throughout. Gives some mysteries and things you want to know to look forward to, instead of just dumping it all on your plate from the start.
Also anyone who thinks this is a grooming plot doesn't know how to read. There was never a father-daughter relationship between the two leads. The female lead has some childish aspects, but given your first introduction to her is her sleeping after chugging a few cans of beer I think it's pretty damn obvious that she isn't meant to be a child.