Increasing his age wasn't as straightforward as he initially thought.
All Rosa and her people could do was mask Rex's youth by increasing the amount of spent energy in each part of his body, hoping that no one would see close enough that he was very young. It was a known method by some people, and the Duke's people certainly knew about it.
But with Princess Davina's talent, they wouldn't check thoroughly.
Finding someone who was at the Master Immortal Spirit rank at ten years old is basically impossible.
No chance the people there inspected Rex that thoroughly.
Like most rituals, the process was quite painful, which worries Rosa.
She knew Rex was an Emperor, and to her knowledge, those who can become an emperor don't have that kind of rough life where they become accustomed to pain. But she stood corrected. Rex didn't only take the pain, but he seemed unbothered by it.
One trait that tells Rosa that he's no ordinary emperor.
Increasing Rex's age required sacrifices.
