The Fighting: Hajime no Ippo Temporada 2 Episódio 12

Ippo lowers his guard and it becomes a blow-for-blow confrontation, with Ippo winning out and knocking Nao down. Nao reflects on his past with Ippo as he gets up once more, only to be ultimately knocked out. Ippo remarks that Nao hasnt felt the pain of losing yet, and now that he has, he will become much stronger.