Chen Gu shuddered, and his first subconscious reaction was: It's over, I've mutated!
An important criterion for mutation is the abnormal transformation of the body, and within one's self-awareness, recognizing this part of the "abnormality" as a part of oneself.
The principal and Aviloya's eyes also changed subtly, but Milgray stared at Chen Gu for a moment, and in her silver pupils, a certain energy flowed through. She breathed a sigh of relief: "No problem, it's not a transformation, but a change brought about by an elevation in life level. Apparently, this guy still isn't acclimated to his current bodily state."
After the Quantum Wizard's explanation, Chen Gu understood: His body had acquired new abilities, coupled with an elevation in life level, so his body felt, "I need a new organ to bear these new abilities." After some "consideration and deliberation," the body brought forth a pair of dragon horns without consulting Chen Gu's opinion.
