Roy walked up to the egg and took out his sword, and no, it wasn't taken out to destroy it but to cut himself.
According to Yulran, his ancestor, to hatch the egg, he needed to spill his blood on its outer shell. As for how much, that's something he was yet to know.
Roy brought it above his hand. His eyes narrowed as he ruthlessly swiped it across his palm, opening up a narrow but long skin wound. Because of the passive self-healing skill that he had no control over whatsoever, it started to close immediately. Much of his blood, however, flowed out of it before it closed completely.
"This much should be enough, right?" Roy asked Yulran.
Yulran looked at the blood in his hand and gave him a head nod. "Yeah, it should be.
"Now, don't wait anymore and do it." Yulran urged Roy.
Yulran didn't have long to live. Half of his body has already disappeared. He wanted to see whether Roy would be able to hatch it or not. That was his final wish.