I'm That Monster Girl You Once Helped Out: A Middle-Aged Teacher Finds Unexpected Popularity in Another World

It’s been 20 years since Washio was summoned to another world—and now, he’s just a worn-out teacher, barely tolerated by his students. But one day, a busty beauty suddenly throws her arms around him and says: “I’m the monster girl you saved back then!” Thanks to a mysterious transformation, monsters