Kuroha to Nijisuke: Kuroki Majo no Divertimento

Meeting the super unlucky boy, Murokawa Nijisuke, the life of the black-haired beauty Yoitsuji Kuroha who is a captive of the underworld changes. For the two who have begun to walk on a fresh path, a new evil has begun to move with Kuroha as their target...
Note:
This "sequel" is just a slight title change due to the series moving from its monthly publication on Shonen Sirius Magazine to a biweekly digital release on Pocket Magazine. The story follows up the events of the original volume.