Two girls enter a school to teach them to be exorcists, the heartless killers of demons. For one, the girl who was attacked by demons, the task was easy. For another, a demon herself, the task was a little more difficult.
Kurokane Shimo is a girl who hates weakness more than anything. It was weakness that caused her to see the monsters. It was weakness that caused her life to change dramatically, for the better or for the worse, she could not tell. She did not know everything about her past, but one thing was for certain. Every useless demon would return to Gehenna where they belonged. She vowed it.
Suzuki Michiko was different from all the rest. She went to exorcist school unlike the others, she was a twin, or thought to be a twin, which was a rarity, unlike the others, and she was the daughter of a demon, how could she forget?
This is posted under a single account, but each perspective is written by separate authors. Shimo is written by and belongs to tsucalibur. Michiko is written by and belongs to Tenshi.
Transmigrated into DxD World-Kuoh Town, Hibari Kyoya. an average student, spent 18 agonizing years in the world fully aware of the dangers, knowing he is utterly powerless in a world of gods and monsters, Until...
[Ding! Sign-In System loading... 20%... 50%... 80%... 100%.]
Destiny, it seems.. has a cruel sense of humor. A [Sign-In System], long overdue, finally bursts to life within him, offering a chance at survival, a chance at power...
[Ding! Congratulations! You have received the Rainbow-Grade Gift Bag!]
...
He then started completing System's tasks, accumulating even greater rewards.
[Ding! Task completed. Reward: Perfect Rumble-Rumble Fruit (Weakness to water Removed).]
[Ding! Task completed. Congratulations to the host for obtaining the Flying Thunder God Technique!]