Masashi Esaka

Referred to as "Osaka" by Kyosuke, Esaka seems to take everything in stride and with a smile on his face. While appearing to be no more than comic relief, he is actually quite passionate about his teammates' well-being and the team's performance. He is selected to be Jyoyo's new captain by both Sako and Kamata, who both acknowledged his excellent attitude and drive to improve.

(Source: Wikipedia)