Aoyama-kun's private life is full of mysteries! In order to reveal some of those mysteries, the three stooges and Zaizen commit the rude act of tailing him. But when they finally arrive at his destination, it's an old, traditional Japanese house, nothing like what they imagined. And for some reason, Ibuki Seigo is there, even though he's supposed to be playing for a famous pro youth team in Spain! He is Aoyama-kun's true rival! Does this mean trouble is brewing?!