Agata is normally protective of his younger sister, but his genius IQ goes out the window when he becomes convinced that Saaya and Tsubaki are in love with each other!
I'll let them be. Those two 
have an unshakable bond now.
Lo permitiré... Ya entre ellos 
hay un vínculo irrompible.
Vou deixá-los em paz. Esses dois têm 
um laço inseparável entre eles.