The Gamer of The Supernatural World (DxD x The Gamer x Solo Leveling)

Basically, Issei is gonna have the system in this book because of some ideas I got from a few other similar books to this one, the only difference is that he is going to have the system from not only solo leveling, but also from the gamer on WEBTOON, I'm also still reading it on season 3, and it's real good, read it if ya want(also ik that the cover don't look good, pls don't judge me, it's my first time😭🙏🙏)(I also DO NOT own any characters in this book, I just thought of the idea from some inspiration)