Ybur pondered for quite some time when he suddenly remembered—Zebuzal had mentioned that there was a strand of Abyssal Power entwined within it, thus allowing this Dragon Beast's heart to be used for sealing.
But... Abyssal Power?
Ybur thought carefully for a moment. His contact with Abyssal Power was either the black flames of the Four-Armed Bat Demon he had encountered earlier or the Abyssal Mimicry later on. Since Zebuzal did not clarify, Ybur also could not figure out what exactly Zebuzal meant, whether there were remnants of the black flames inside him or if his Abyssal Mimicry had caused some sort of misunderstanding with Zebuzal?
He couldn't figure it out. If it were the latter, then, of course, it would be better, but if it was the former... The black flames had been removed by the owner of Treasure Pavilion previously, and if it had not been completely cleaned, wouldn't he have to blame the owner's lack of skill? In that case, I would file a complaint!