Setsu's unconventional mother, Sawamura Umeko, has suddenly descended and forced him to enroll at Umezono Academy. In helping to assemble a shamisen which has lain long disused, he meets Maeda Shuri, a girl in the same grade as him. While all this is going on, Setsu reunites with his older brother, who he hasn't seen in a while, and they play shamisen together...
Oh! That was Setsu-san's mother.
.كانت تلك والدة سيتسو-سان
Das grade war seine Mutter.
¡Esa era la mamá de Setsu!
¡Esa era la madre de Setsu!
Oh, c’était la mère de Setsu,
à la télé !
Oh, quella signora è la madre di Setsu-san!
Oh! É a mãe do Setsu-san.