Its caelus(white hair) and Phainon(Blue hair), And in the main story of HSR(the game where it came from) Theres one scenario on the main story line i think in HSR that confirmed that Phainon have an Evil counter part. Thats why theres 2 phainon in here.
can someone explain what just happened in the second story? why are there two guys that look the same? idk anything about that game lol