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...
I am Airi's brother, Rei!
¡Soy el hermano de Airi, Rei!
¡Soy el hermano de Airi, Rei!
Sou Rei, irmão da Airi!