UltimateSenpai
Nice! I like your work and hope you'll continue writing! Just an idea: what if the Mc publish something like the Weekly Shonen Jump from Japan. A weekly chapter from each of his manga, maybe some manga by new artist from Teyvat(original manga not from our world), ad for business (restaurant, funeral parlor, tea house...). Ryuhei could make a lot of profit from the subscriptions. And he could still sell the complete manga volumes, one every 3-4 months