in this story takes place in the high school dxd universe and also rias gremory is a 19 year old young woman and she's from the gremory clan and she's it's heiress and she's also known as the crimson haired ruin princess because of her hair and the power of destruction and also she's very seductive and also a young man named Mikey Suzuki the wolf pirates captain will land in this world since him and his crew were all separated to different worlds and the reason he's going to this world it wasn't really his choice and his crew got one shotted by a very powerful pirate which caused him to get alot of wounds and his submarine was cut in half which his submarine went with him as well and he's currently still mid air and also this story is tragic and emotional