EroticMaster
If you want to make two sky dragons with shadows... MC better find an area where there was a great war of three factions, this will also give a lot of shadows: angels (some Seraphim), demons (four demon kings) and fallen angels (some cadres). This can also attract the heavens, since the souls of the two dragons are imprisoned in the sacred mechanisms, and they themselves are in the system. Because of this, the system will consider both dragons alive and dead at the same time, this can be used to attract Gabriel or Mikhail to the investigation. But it’s up to you, I’m just giving ideas... (I myself like to just write an alternative plot of stories: DxD, Soul Land or Honkai Impact in combination with other worlds; They just don’t release general reading)