Ethan's thoughts returned to several days ago, on the night the red moon rose. He later learned it was a celestial phenomenon triggered by the sacrificial ritual in Riverside Town. While he practiced the Fireball Skill under the gas lamp, the residents of Riverside Town were dying in agony and despair due to the curse in the water supply.
However, as time went on, he realized the situation might be far more complicated than he had imagined.
The contaminated zone is a special space, so unique that just by properly utilizing its rules, even an ordinary follower of the Evil God could potentially kill the Empire's Knight Commander.
The book "Light Messenger Yakwell" mentions that Yakwell and those investigators who died in the deep level 3 were four-tier Transcendents from different paths. They were seen as standing at the very top of existence in people's eyes.
