Matsutaro is officially a sumo wrestler, having made his aggressive debut. But his rowdiness hasn't subsided, not one bit. When his senpais decide to throw a party for the ailing master of Raijin stable, Matsutaro is not invited; though Tanaka is invited, he decides to stay with the rejected outcast, not because he feels sorry for him, but because his master told him to keep Matsutaro out of trouble.
I don't know how you found out. 
I thought I kept this weapon well-hidden.
Das war doch meine Geheimwaffe!
Pensaba que había escondido bien esto.
Pensaba que había escondido bien esto.
Eu pensei que ninguém tinha 
reparado nesta arma escondida.