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 ...
She will be your substitute 
mother from now on.
Sie wird von nun an 
deine Ersatzmutter sein.
Será tu madre sustituta desde este momento.
Será tu madre sustituta desde este momento.
De hoje em diante, ela será sua nova mãe.