Kaname is worried about never seeing Mary with friends from her class.; Mastushita assumes she has lots of friends.  But what does Mary think?
Hey, quit playing around 
and cheer for us.
Oye, dejen de estar jugado y anímennos.
Oye, dejad de estar jugado y animadnos.
Ei, parem de brincar e torçam por nós.