Wrought Iron Devil II: Grand Order (Highschool DXD x Male Reader)

It's been decades since the the events of the Grail War and the events that forged the Wrought Iron Devil. In those decades since, the Devil now known also as Lord Emiya has not only married but had children. It has been a time of peace, prosperity and the occasional trip to another world via Kaleidoscope. But as his children grow, so too grows their sense of adventure. It finally culminates at the invitation of an old acquaintance. Thus, the Wrought Iron Devil must watch over his family as they embark on a adventure that will cross the boundaries of time, space and dimensions.