In the Multiverse with an Cultivation System

After Noah is hit by the famous Truck-Kun, he finds himself in DxD with a Cultivation System.
What will Noah do with his power in a world where Gods, Devil and Angel are more than just legends?

Worlds:
Main World: DxD
Secondary Worlds:
1. Demon Slayer
2.
3.
4.

Feel free to write in the comments which other worlds the MC should visit.
Updates: 2/week
English is not my main language.
For infos about the system read chapter "System Info".