Chapter 524: Devastating Losses

"No!" "Master Sakai, save me!" Mitsui Hiroki shouted desperately, but in the next instant, an ice wall suddenly rose from the ground, appearing in front of Hiroki and the ten other half-step shinobi, shielding them from the oncoming thunder dragons. "Phew..." Everyone let out a deep sigh of relief, feeling as if they'd just narrowly escaped death. However, just as they wiped the sweat from their foreheads, they saw the thunder dragons merging together in groups of three or four, their power increasing...