So Matsutaro got scouted and reluctantly decided to do sumo in Tokyo. But he never wanted to do sumo in the first place, so his motivation-level is zero. He refuses to wake up for morning training. He even slugs his senpai in the end. But the professional sumo-wrestler Inokawa steps in to teach Matsutaro a lesson.
However, it's because he 
has no life experience.
Allerdings hat er kaum Lebenserfahrung.
Pero es porque no tiene ninguna experiencia.
Pero es porque no tiene ninguna experiencia.
Mas é porque ele não 
tem experiência de vida.