Rakuen no Ookami to Hitoribocchi Sister

I want to be by your side... Even if you end up being able to eat. One day, sister Mari, a glutton, wandered into a forest with the saying that "demons" would come out. So she met... It was Yugo, a restaurant and shopkeeper full of delicious food. Hugo wants to smoke about Mari, but she is curious about him because she has no taste for delicious food! Because of Mari's friendlyness, the distance between the two is getting closer. However, the identity of the "demon" that people fear is -