William was right, the lightning wasn't affecting his body in any negative way. However, there was something else that was suffering from such lightning, which was that seal.
William didn't know that his body was emitting an irresistible aura, one that was able to stir the swarms of flying hornets, forcing them out from the inner zone to the outer one. And it was also the one that affected the lightning inside this place.
This came all from his snake spirit. As he started to experience a spirit fusion, he started to gain traits from this spirit. One of them was this weird aura, one that'd stir up any toxic or corrosive element inside living creatures or even inside the world itself.
Just like this place, where lightning started to flock towards him without any sign of stopping.
As for why he didn't feel any pain or experienced any hurt when the lightning bathed over his head, that was because of a simple fact… This wasn't true lightning!