(This fanfiction is based off the anime, not the actual manga of Tokyo Ghoul)
The world I had once grown up in as a young, innocent child had turned into one of the most horrific places I had come to know. Life for me had never been the same since the day I met Rize and I became a monster. I thought that I could control what was happening, but I soon found myself become isolated and alone. I grew strong, and with the help of an old friend, we made up for the bad things in our lives. Throughout this world, I would stand with her forever. I just wished so badly I could tell her that, but I knew that Touka would never feel the same way. But there wasn't time for romance anyways, not when I had every person and practically every ghoul in Tokyo after me for what I had become. I had to leave her, and my past behind as I faced the truth and broke everything left inside myself. Even though they all say otherwise, I too had a living, breathing soul. But unlike others, mine was all alone.
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!]