Kobato and Osanai are invited to Dojima's house, where he makes them cocoa using his special method. When Osanai leaves, Dojima asks Kobato about her change in personality. 
That's simple, then.
.الأمر بسيط إذًا
Ganz einfach, es war gar nichts los.
Entonces es algo simple.
Entonces es algo simple.
C’est tout simple.
Il s’est rien passé.
Allora la risposta è semplice.
Então é simples.
Тогда всё просто.