The remaining four of the seven heroes were confused by Ren's statement, on the other hand, Ren's companions immediately knew what was going to happen. They quickly spread out and took defensive stances. Ren could no longer hold it in and stomped his foot onto the ground causing the earth to shake.
Ren did not use mana nor Spirit Aura, that was simply his physical strength at full display, with his current strength this was enough to face most opponents. The moment he used mana or Spirit Aura, he might accidentally destroy a large portion of the continent, and worst of all he might not be able to enjoy this battle fully.
