Namiko is the first son of Masao and Ayaka Shizuka. Masao Shizuka was a young doctor that assisted med-nin during the Third Shinobi War. When he was in service at Konoha he met Ayaka that assisted as a volunteer the wounded. They fell in love and get married. Masao started to work at the Konoha Hospital while Ayaka took care of their first child Namiko. When he was five they had another child, a little girl named Chiyoko. After other two years Masao went sick and died.