En 2011 Kojima describió su semana como dormir solo cuatro horas por noche y pasar el resto del día trabajando o en reuniones; dijo que él mismo lamenta estar tanto tiempo lejos de su familia, pero que intenta dejar libres los fines de semana para estar con ellos.
«he gave his schedule during the week as sleeping for only four hours a night, and working or in meetings the rest of the day. He said that even he regrets being away from his family so much, but that he tries to keep weekends free just to spend with them.»