Half an hour after undergoing the process of integrating the Heart of Bahamut into his heart, Charles regained his ability to control his body. He immediately moved to another room, because he felt it was unsightly to just lie on the ground.
The foremost reason of why he moved to another room was still, of course, to prevent his body from being exposed to any danger. He had a premonition that someone would come there, and didn't want to be interrupted.
Because of that, he surrounded himself with a Rune that would blow him up along with everything around him by using the Mana inside his body and the Dragon Heart when it detected an abnormality in his Mana Flow.
In other words, the Rune would be triggered if someone disturbed his Dragon Heart Integration process. Lucky him, his premonition turned out to be a reality.
Because of Charles' safety measures, Basil, even though he knew where Charles was, didn't bother of find him.
