Roan then explained what happened after the expert of the Realm of Gods escaped. "The demon's body lost the capability to maintain stability after receiving injuries from his escapade from the Underworld and the expert from the Realm of Gods. If he wanted to recover, he would need to go back to the Underworld, which you obviously know by now that he wouldn't dare to."
Celis understood what Roan meant. "With that being said, he used the second method available for him, taking high-level souls to recover while staying in the Realm of Mortals."