Sam is currently in the dining room and he is already eating a lot of food right now. For these 8 days he stayed busy on liquidity and spiritual energy and did not know about the current situation. Sam gets to know that Livia, Emma, and the prince went inside of the danger zone.
Three of them after fighting him became more focused on increasing their power while completely forget about Breaking through to next Grade. All of them understand the importance of reaching the limit of their grade and they are eager to reach the limit.
On the other hand the Oni king is only responsible for the matter that currently appears in the danger zone. Suddenly the king got notified by the search team that some monster entered the barrier which prevented one zone to another zone. Suppose like the situation when he went to the border area of the Epic grade monsters he suddenly found a monster who already reached the planetary grade.