In a world with demons, angels and fallen... Kaito, a test subject found freedom in the wide open world. When he comes in contact with a cat, he can't help but feel drawn to her for some odd reason. He wants to know more about the supernatural, although he may already be involved... This book is mature and there will be lemons! Since High school dxd is basically a... yk... why am I even explaining. This book has some sad moments and backstories.