Coach Kamogawa announces Ippo’s next opponent is Yoshio Fujiwara .
"Hammer Nao's Goal!" – Focuses on Ippo defending his title against his former junior, Yamada (Hammer Nao). Hajime no Ippo Episode 12
During the bout at Kōrakuen Hall, Fujiwara uses illegal headbutts to gain an advantage, catching Ippo off guard and knocking him down. Coach Kamogawa announces Ippo’s next opponent is Yoshio
For further details on the series' progression, you can check the Episode List on Wikipedia or the Season 1 Wiki . Hajime no Ippo Episode 12
In Episode 12 of the original Hajime no Ippo series (Season 1), titled (or sometimes translated as "A Declaration of Friendship"), Ippo faces his second professional match against a veteran dirty fighter and experiences a significant shift in his social life at school. Plot Summary