Lin's friend, Airi, is being stalked. The three brothers immediately come to her aid, saying they'll take care of the stalker. They sneakily follow Airi around and soon find out it's not just a stalker that follows Airi around...
If you're not stalkers, 
then what are you? Skirts?
¿Si no son acosadores 
deberíamos llamarlos faldas? 
¿Si no sois acosadores 
deberíamos llamaros atontadores?
Se não são stalkers, preferem 
ser chamados de estacas?