As Akari's summer break has finally begun, she wracks her brain to come up with fun, summery things she can do together with Sophie.
However, the ocean or anything outside are all a bad fit for a vampire like Sophie.
Then she has a moment of clarity and realized that a firework festival is at night and a summery activity, so she immediately begins preparing yukata.
Erie and Hinata and join them to go to the festival, however...
You mean you took her away 
while she was sleeping?
أتقصدين أنّك أخذتها وهي نائمة؟
Was? Ihr habt sie mitgenommen,
während sie geschlafen hat?
¿Te la llevaste mientras dormía?
¿Te la llevaste mientras dormía?
Vous l’avez emportée
dans son sommeil ?
Stai dicendo che l'hai portata via 
mentre dormiva?
Quer dizer que você a levou
enquanto ela dormia?
Значит, увезла Софи, 
пока она спала?