Gakuto is keeping his class observation day from Hayato by using a stand-in. 
My sister's a teacher there.
Meine jüngere Schwester ist Lehrerin
an der Hikarigahara.
Mi hermana menor es maestra allí
Ma sœur cadette donne des cours,
là-bas.
Mia sorella insegna lì.
Minha irmã é professora lá.
Моя сестра там преподаёт.