You are dead and have a chance to reincarnate, that's what I heard after being run over by a truck. I asked do I have a chance of choosing where to be reincarnated and which the being in front of me answered yes, I answered to be reincarnated in high school dxd world but ten years before the start of the story to which the being said done and asked me to wish for three things in order to survive in the world of dxd. Did you say three wishes? He said "yes" and I said" first wish to be reborn as a white werewolf similar to one in the noblesse, second wish to be able to easily master senjustu, third wish to have a manual to cultivate my mind which covers the weaknesses of the senjustu.
I asked is my wish acceptable to wish he laughed and answered I thought you would wish for something ridiculous like controlling all element but you surprised me which no one has done for ages, I said to him that I wish for that because I don't want to be the center of attention. He said your wish is being accepted and would you like to be reincarnated as a baby or and adult to which I answered that I wish to be reborn as an orphan that lives alone in a forest and he asked why to which I said to have time to train my abilities without gathering attention. He sighed and said done hope you enjoy your stay in your new world and everything went black.