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. 
Do you know about our 
family's treasure,
¿sabes algo sobre el 
tesoro de nuestra familia,
¿qué me puedes decir sobre el tesoro de nuestra familia?
Você sabe sobre o 
tesouro da nossa família,