As Muzan shut the window a sudden feeling of warmth washed over him, it was so strong that it had almost put him to sleep out of the relaxation feeling it gave!.
It felt holy but something else, similar to the darkness of the demon clan, suddenly a thought came upon Muzan mind," I should go check it out, as it feels like as the same feeling Gowther would describe his aura at times so it must be another nephilim half demon and Angle or a demon fighting a angle!."
As Muzan gaze landed on Moro who was kneeling in front of Muzan while he suddenly summons his unique Magical weapon that was made for him from Demonic Beast parts and angle blood created by the Wisemen out of consideration and payment for the relic in his care but it was done in secret because as the Chief and Wisemen if he were to pick a side in this holy war.
It would be Muzan side as he already managed to double his power level during his time in the human world, the thing that had been fun for the Wisemen was creating magical seals to help suppress Muzan power level from growing out of control because of a new discover that the reason to the continued growth was because Muzan sealed away bloodline of the Nephilim race keep rejecting the angle side of himself and the seal that has been also keep them two bloodlines apart so Muzan can only be considered as a demon with a holy affinity!.
the magic energy Muzan would release was enough to start earthquakes and that were to be judged that the world would crack apart and explode so to stop that from happening the Wisemen has created a special sword that gives Muzan control over the earth and nature using his unique magical ability of Life Muzan can connect to the world itself and manipulate the Life of everything that is natural and growths from the earth itself mimicking the fairy's ability to manipulate mother nature, It also gives Muzan the ability to manipulate the earth itself similar to earth magic of the Giant clan.
Muzan power level is constantly getting stronger but with the sword it helps contain and suppress his power level completely as if he doesn't exist using Muzan other unique magic of Death it gives Muzan a special ability of being Intangibility when something physical try to penetrate his skin as if he was a ghost!.
The magic of Muzan life was used for the sword but it needed to have a hilt made out of the fairy king tree bark similar to the weapon a fairy king would receive but in order to be completed it needed it so right now, Muzan has to carry the blade wrap in cloth and tie around his back to keep the special magical benefits!.
Muzan has been wanting the sword to be made so he does not have to go back to purgatory, but now off with him to explore where the feeling that was coming from because it could be dangerous but to his expectation there was indeed danger In front of himself was a huge white glowing bubble with many demons inside of it!.
The eyes of Muzan have gone slightly wide from not being focused on the rest of his surroundings leading to someone familiar who had tagged along, suddenly they turned dark from the darkness of the demon clan who had taken offense to the holy energy!.
All the seemingly trapped demons soon turn their heads towards Muzan direction, right after that they minded their own business from the unexpected party member that has joined him unknowingly, who else but Merlin!, who has been secretly following Muzan after he teleported out of the cabin.
Muzan, feeling an invisibility spell surround him, he is already familiar with the magical signature of this person who is helping him so there is no logic in panicking about the magic because his death magical ability allows him to kill magic like anti-magic but it can't be use at the same time as life magic sadly!.
He couldn't help but get annoyed at the thought of the reason of him not being able to use both death and life at the same time but because Merlin joined there are consequences for her actions, if she were to end up getting hurt Muzan though!, "Merlin if something happens to you while you're with me, your father would blame me!," with clear dissatisfaction in his tone Muzan spoke out his opinion with closed eyes in frustration but Merlin had a different expression!.