After leaving the hospital ward and returning to Chen Yu's office, Hiromi Jounouchi remembered the changes in Chen Yu's eyes from earlier in the ward, so she asked him, "Mr. Chen Yu, what happened to your eyes just now? Was it a spell, or did you modify your own eyes?"
"It was a combination of both, but mainly it's because my body has partly undergone a metamorphosis, and parts of my eyes and brain have ascended to a higher Life Level. Therefore, when my eyes were transforming, I followed the modification methods of the magic eye and made some small adjustments to them," Chen Yu explained to Hiromi Jounouchi. The life metamorphosis he mentioned had been subtly in progress since after completing the Promotion Ceremony to become a Certified Necromancer; it's just that now he had completed the metamorphosis of his brain and eyes.