December reveals Ros's secret.  The party is shocked and glad to hear it.  But Ros seems unhappy, and December thinks he knows why.  He says that if Ros uses his power it will revive the Demon King, and so he orders Juli to attack again.
Damn it, you ruined the fun mood!
Rayos, has arruinado este 
ambiente tan divertido.
¡Acabas de fastidiarnos la diversión!
Droga, você acabou com o clima divertido!