"Because the materials needed to cast such a spell were too precious." Han Jin sighed. "I overestimated the effectiveness of my berserker spell, and underestimated the strength of that bastard."
"What materials do you need to cast it?" they asked almost simultaneously. No matter how precious the materials were, they were nothing compared to the great power of that spell. They all knew why Han Jin had told the others to leave. If this news were to be leaked out, it would bring the team unimaginable consequences. Those territory owners, who were sitting on their high thrones, would be sure to take Han Jin as their treasure, and try every means to destroy this team so as to have Han Jin in their own hands. Who wouldn't want to have a second life?
"It's very troublesome..." Han Jin could only use this as an excuse to slight over the answer.