母三人

Kayo Nakahara, Seiji's mother

Natsu, the Foster Mother

Keiko, the Mother-in-Law

Kazuko, the Birth Mother

Kensaku, the Engineer

Mochizuki

Seitaro Nakahara, Seiji's father

Katayama

Tatsuzo, the Foster Father

Seiji, the Father

Teruko, School Student