Fuumin is worried that he’s only made one friend since starting school. Namely Masaru. Luckily he meets Machahiko, the manliness obsessed presdient of the Karate Club, who wants him to join the club. This is because he’s the only member left after Masaru beat everyone up. Masaru and Machahiko have a duel, which Masaru wins using the Sexy Commando once again. This time he gets Machahiko to let his guard down by complaining that Machahiko hit him before he was ready.
Machahiko is the third main character to be introduced. He often seems to think that his life is taking place in some idealised fictional world where his idealised views of how a man should behave makes sense. This is invariably dispelled by harsh reality. The gag with him tends to be that whatever he attempts to do will get this big build up from himself, often with speech of some sort, only to instantly fail.