Genos initiates the battle and seemingly overpowers the Deep Sea King until the monster rips off one of his arms. Genos tells the civilians to flee before being further damaged when shielding a child from a glob of acid the Deep Sea King spewed before Mumen Rider appears. Despite his determination and the civilians cheering him on, Mumen Rider is brutally beaten until he is caught by Saitama, who had been instructed by the Association to provide backup and arrives in that exact moment...