Disclaimer: I do not own Inuyasha or any other characters (except Katsurou).
Compensate
"In all my two-thousand years, I have never seen such a thing." Bokuseno murmured.
Kagome became alarmed. "Wait, seen what?"
All of their eyes were on Katsurou as he gleefully leapt through Bokuseno's branches.
"Sesshoumaru, can you feel it? It's there, but...lying dormant."
Kagome stood, obviously losing her patience.
"His reiki." Sesshoumaru said simply.
"Katsurou has holy powers? How is that even possible?" Rin asked.
"Katsurou's youki and reiki are at war with each other. His energy is very unbalanced. This explains why he is able to become a full demon." Bokuseno explained. "At the new moon, magic energy is thinner, which explains why some hanyous become human. For a normal youkai, this has no effect, but for Katsurou, his demonic energy dominates and over compensates for his holy energy, resulting in a full demonic transformation. He will never lose himself, because his reiki protects his human soul." Bokuseno explained.