Matsu goes to Tokyo with the sumo-stable located near Reiko-sensei’s home, because why else would he want to go to Tokyo anyway?  Matsu however quickly angers his fellow sumo acolytes and professional senpais with his boorish disrespect.  But never mind them, he must first visit Reiko-san ...
You said it's right behind the stable.
Du hast gesagt, es wäre 
direkt hinter dem Stall.
Dijo que estaba detrás del establo.
Dijo que estaba detrás del establo.
Você disse que fica atrás da academia.