Weakness

Since Light Culler Murskogan didn't gain his long lifespan from his Beyonder characteristic, Klein could only begin considering external factors.

The effects of a mystical item? No, he doesn't have any mystical items on him. Aside from the Giant King's residence, there's nothing in the vicinity either. However, that's the sleeping ground of Dark Angel Sasrir. Furthermore, the key is with me. I don't think Murskogan would dare or have the means to enter…

Who took the key to the Giant King's residence after Sasrir fell into a slumber? Isn't that a bit too wicked? Of course, the palace without the powers of a deity augmenting it wouldn't be able to trap a King of Angels… Or perhaps, this key had long been transported to the Northern Continent during the migration of the giants. Sasrir chose to sleep in the palace because, other than a small number of existences, no one can open the door and affect "His" sleep?