It also gives him the lesson that he should not become careless like this about the Monsters of the gate. After that he finally now wonders about the reward that you will receive but he cannot see anything appearing in that place so that makes him quite confused. Suddenly something unexpected happened because the whole world began to shake.
Naturally because he killed the Boss monster the gate will automatically disappear and right now everyone present inside of the gate will also automatically send outside of the gate. He just hopes he will not get sent outside of the gate like this because he still did not receive the reward after killing the Boss monster.
