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 ...
Mother, that was a situation 
that couldn't be helped.
Oh Mama, damals konnte er nichts tun!
¡Mamá, eso fue un malentendido!
¡Mamá, eso fue un malentendido!
Mãe, ele não teve culpa de nada!