After a fight Hayate, Nagi heads to the apartment complex to hang out.  But her “little sister” is the only one home.  This might be Nagi’s chance to find out what Ruri’s real goal is. 
I just bought it at the end of last month!
¡Lo había comprado a 
finales del mes pasado!
¡Y éste lo compré a finales del mes pasado!
E eu tinha acabado de
comprar, era novinho!