[Author's Note]

There are certain things that I need to make clear about this fic -

First, the timeline that I have chosen is when Rias and the gang were in their second year of highschool since I wanted to give MC some time before canon starts to deepen his bond with the girls.

Second, I won't be following the canon timeline so many events may or may not happen how they did in canon.

Third, there might be some characters from other fic's but it doesn't mean this is a crossover. I'll portray the characters as the part of DXD world and they may have a bit of a different personality then they had in their respective fic.

Fourth, about Lionel's power ranking well he is a nigh-omnipotent being with his skills but he still doesn't have True Immortality yet since it is something he just can't create he needs to understand various Laws and comprehend what Immortality is. The only beings capable of harming him can be other beings of similar power while the omnipotent level beings can kill him. There are many other things that I'll be explaining as the story progresses.

Lastly, some other characters will be having a bit of a different personality then they did in canon. This includes Rias as well...I know many hate her but she'll still be in the harem.

Well that's all I have to say, if you have any questions feel free to ask it in the comments. I'll try my best to answer as many as I can.