Interesting
I can say, get an idea to draw a manga about food based of his world, then people will try the recipe and maybe gonna go like "WHAT IS THIS MAGICAL FOOD, WHERE THIS FROM, WHO THE CREATOR OF THE RECIPE"
Then manga about martial arts, war, harmony, music, ninja or something that can boost anything. And even manga about peace with the demon lord? Surely he can think a manga that pull the demon's interest
He also can make it 4 koma manga or 1 page per release like in the magazine so the work not gonna be overloaded