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. 
He must have washed it.
.لا بدّ أنّه غسله
Dann hat er ihn gespült.
¿Y si la lavó?
Lo habrá fregado.
Il l’a lavée.
L'avrà lavato.
Ele deve ter lavado.
Помыл, наверное, сразу.