I've been translating Naked Hero - An Exposed Adventure in Another World. As the title suggests, it has a very similar premise. Although, it has stronger fanservice than this series because the girl is completely nude. Check it out if you're interested, but be warned: It's currently marked as Pornographic, despite its lack of sex or genitals. I tried to get it changed back to Erotica, but mangadex's staff wouldn't do it or explain why the change was made.