CrossEdge
Someone who has to appear would be bills and whis with zeno_sama, he would sell a lot of food, also Kazuma and co, or the heroine of the shield, Madoka, years old (xd), and one of the pharmaceutical world would be interested in seeing the mc holding up against the young masters of the world of cultivation, or in pokemon and cooking them (how delicious...it's a lie but the pokemon cooking videos left me traumatized) and many more worlds that would be super interesting