Sakuya teases Nagi explaining that she is so bratty that she can't take care of young children. Furious, she asks Hayate to go out and find her kids to take care of.
Humph! I was not playing. 
I was only looking after these guys.
No estaba jugando. Solo estaba 
cuidando de los niños.
Eu não estava brincando. 
Eu estava apenas cuidando deles.