Matsutaro had decided to become a sumo wrestler to impress Reiko, the lady of his dreams. But he's still not all that enthused about the whole idea. One evening he spends some time with a wrestler-to-be, Tanaka, who happens to be laid out with a cold. They play chess together and Matsutaro in a tantrum makes him cry; feeling bad for that, Matsutaro decides to help Tanaka make the beds for their stable-mates. Boredom sets in after the stable-mates return, so Matsutaro says they should pull a prank on the ani-deshis upstairs...
I can't do that. I'll get in 
trouble if the seniors find out.
Das geht nicht. Sonst kriege ich
 Probleme mit den Ani-Deshi.
No puedo. Me meteré en problemas 
con los ani-deshi.
No puedo. Me meteré en problemas 
con los ani-deshis.
Não posso! Os veteranos vão ficar uma fera!