Yandere Jujitsu Kaisen x male Bayonetta

When the last Umbra witch a ancient clan of powerful cures techniques.

Long ago their was two clans the Umbra Witch and Lumen Sages as both clans possessed great and powerful cures techniques.

At some point in time, both the Umbra and the Lumen came together in an effort to come up with measures to protect their homeland from invasion. The Umbra and Lumen built their own variant of the occult device. However, proving to be too powerful to be easily controlled, the Umbra and Lumen sealed it away in a different dimension.

The two clans who was on different teams still had great respect for each other, but both was for bidden to have a romantic relationship/bone

That until.....

Five hundred years later

A Sage named Balder and a Witch named Rosa fell in love and conceived boy named Mariposa or Azuki Chouka. This broke the delicate balance between the two clans and sent them down a path of conflict, eventually sparking the Clan Wars.

After the clans war ended which led each other killing all from both side, both Balder and Rose made it out they got married and finally got a normal life leaving the jujutsu sorcerer world but both was killed by a unknown force leaving alone Mariposa.

Leaving their child long to face the world alone, until a one lasting Umbra Witch. Morgana teaches Mariposa the dark arts of the Umbra Witch cures techniques. Now becoming jujutsu sorcerer but that doesn't goes well