Kind of like the novel Summoned Again? on ScribbleHub. The MC was summoned to another world to be a hero, after completing their main quest on that world. He got sent back to the his original world, thus dealing with the problems of disappearing for years, relearning living in the modern civil days etc. It doesn't have to be that alike and specific. I just want to read more stories in that trope. I don't mind if it's a male or female MC. Bg, Bl, Gl is all alright with me.
Kikanshita Yuusha no Gojitsudan The Hero Who Returned Remains the Strongest in the Modern World Isekai Kaeri no Ossan wa, Fusei Sukiru de Fathercon Musume-tachi o Tororori ni I Came Back but the World is Still a Fantasy!? havent read them yet so idk if its good enough
I don't remember the title but the story went like this. A super unlucky MC was injured and hospitalised, so to combat boredom she downloads a game where she helps a boy in ancient times. The boy / ML is a prince living under another identity as an unloved / abandoned son of some duke household. At first she played him as a then she could go to him and later he can come to her.