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...
They claim they're purely 
acting upon how they feel.
Solo creen que actúan tal como se sienten.
Solo creen que actúan tal como se sienten.
Eles acham que estão só fazendo
 o que bem entendem.