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.
I don't really know a lot about Christmas,
Ich muss zugeben, dass ich keine
Expertin für Weihnachten bin,
No sé mucho sobre la Navidad,
Je ne connais pas très bien
les coutumes de Noël,
Non so molto su questo Natale,
Não sei muito sobre o Natal,
Я, конечно, многого не знаю 
о Рождестве...