I still remember back then at the beginning of the story, Ahriman was stopping his mission to conquer the world due to worried seeing his daughter being so nice to everyone. then he request Jahy's help to turn Dou into proper merciless and terrifying demon. but now he just happy seeing how Dou become nice demon who accepted by everyone. I know this means as character development for everyone around Dou (except Jahy of course) to accept her as whoever she is. but Ahriman must offer apologizes to Jahy and beg her to accept Dou as whoever she is as well. considering Jahy is a very diligent and obedient demon who do her best to ensure her mission success no matter what happened. poor Jahy-chan.....