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. 
Urashima answered: 
"Wh-Who goes there?"
Urashima respondió: 
"¿Quién está ahí?".
Urashima respondió: 
"¿Quién está ahí?".
E Urashima perguntou:
 "Quem é você?".