I just hope that it won't turn into some boring political scheming later on to get Helvi&Theo to the X kingdom.
Not like they even could do it since Helvi does whatever Helvi wants.
Get me the wedding, get me some child raising and only then can the manga end.
Epilogue could be a big buff Demon King laughing as a female Hero enters his castle (obviously there is thunderstorm outside).... only to turn out that the girl is here to tell her brother that he should stop his chunni play and come home, since Dad just made a dinner. Then it turns out that Theo is still the same eternally young shota, kek.