Anime Crossover: Contracting the Dragon Girl Lucoa Turns Me into a Monster

After transmigrating into the world of High School DxD, Mu Bai becomes the head of the Andromalius demon family, the lowest-ranked of the Seventy-Two Pillars!

He unlocks an Awakening System, awakens his bloodline, and unexpectedly discovers the World Tree, striking a deal with it.

At last, Mu Bai contracts the dragon girl Lucoa and makes her his servant.

But the Underworld discovers him and labels the deal evil, declaring that he has violated its taboos!

With only the strength of an Upper-Class Devil, he has no way to defend himself.

Fine, so that's how you want to play? Don't blame me for flipping the table. If I can't play, then nobody can.

He immediately dissolves the contracts with the other fifteen pieces who had signed contracts with him!

And with the rank restrictions between pieces and kings gone...

Kaneki Ken, a former soldier whose body has fused with S-cells: "I'm not the one at fault, and neither is Mu Bai. This world is to blame!"

Athena, the Heretic God and former pontiff: "Mm-hmm! I've finally regained my freedom."

Accelerator! Lucoa! ...And more!

While Mu Bai is imprisoned, the whole world is turned upside down. The dragons, Fallen Angels, Angels, and others of the Underworld all join together to publicly proclaim his innocence.

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.