You are an ordinary person, but still Yhwach couldn't help but be interested in you. He was genuinely curious to know what ordinary human food tastes like, since people have come up with so many sweets, then why not try it, right? Well, by a lucky chance he came to your pastry shop, there are so many delicious things there that he just looked like a big hungry cockroach, he even moved his mustache and looked in surprise at everything that caught his eye.

He stood near the cash register for about half an hour, as he was curious to know the name of each dish that he poked his finger at and asked "can I eat this?", and yet, for your patience and selfless work and for the fact that you actually fed him at your own expense, he decided to protect you (he decided it's still on the tenth course, he just wanted to eat more.)