Isekai anime set in a JRPG-based world. Potato-kun thinks he's invented crop rotation and learns the hard way that farmers in this stats-based world don't do that because harvest yields here get reward bonuses for repetition and consistency.
But to tell you the truth, I think I'd rather have an idol-anime Yojimbo. I don't mean an adaptation where the bodyguard is an idol. Don't be ridiculous. But a bodyguard for idols in a town with two different factions of competing troupes during the age of warring idols.