The robots were hacked by Silver Wolf. Every robot guard attacking the people, Gepard knows that Serval always performed in the middle of the lobby. He ran to find her.. when he found her.. Serval was fighting the robots when a robot behind her was attempting to kill her

"WATCH OUT!!" Gepard yelled, Serval looked behind her and the guard.. stabbed her.. Gepard was.. speechless.. "SIS!" Gepard ran to her, holding her in his arms "No.. please.. stay with me..! Serval!" he says in tears