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. 
We have a promise.
.وعدنا بعضنا
Wir haben uns etwas versprochen.
Tenemos una promesa.
Tenemos una promesa.
Noi due ci siamo scambiati una promessa.
Nós fizemos uma promessa.
Да, конечно, нас связывает клятва…