It's almost Christmas in Akihabara.  At Lenessia's mansion, Marie and Henriette are all visiting.  Lenessia is smiling, but she can't open herself up to the adventurers because of how different they are.  Akatsuki, who has been tasked with guarding the princess, is the only one who isn't having fun.  She thinks of Shiroe and worries about her own powerlessness.  Then, in Akihabara in December, a shocking event occurs.
As the snow falls, the battle with 
the murderer finally begins.
Mientras cae la nieve, empieza por 
fin la batalla con el asesino.
Sous une neige virevoltante,
Cade la neve, 
mentre ha inizio lo scontro con l'assassino.
Enquanto a neve cai, a batalha com
  o assassino finalmente começa.
В снежной пляске...