While Japan has to let immigrants come to help ease the labor difficulties facing the nursing care sector, Sono says in her Sankei column, Japan needs to create a legal framework that strictly maintains the status of these workers as immigrants, and does not permit naturalization.
Actualment, al Japó, s’accepten els immigrants que contribueixen a reduir el dèficit de personal del sector de la infermeria. Sono, en el seu article, defensa que Japó hauria de crear un marc jurídic que mantingués l’estatus d’aquests treballadors com a immigrants i que no n’autoritzés la naturalització.