He first found out about his parents' infidelity on the third day after he had acquired the mind-reading ability.
At that time, Kagura Hikaru was lying in the hospital bed, recklessly peering into the minds of everyone who passed by the ward, deriving a bizarre sense of pleasure from this activity, as if he was superior to all beings.
The worst part was that he legitimized this twisted psychology, claiming it was to collect the skills possessed by others.
He wanted to dominate all skills and become an omnipotent god.
That's what Kagura Hikaru seriously believed at the time.
Soon, he learned his lesson.
As usual, he read the minds of his visiting parents and saw something unexpected.
His mother casually lied, saying she was going back to work, but she actually wanted to rush to meet a man named 'Daisuke.'