Seishin-ni (清心尼, 1585/1586 – June 1644), born as Hachinohe Neneko (八戸 子子子) or Nene (祢々), Mego (女古,女子)[1] was a Japanese noble woman from the Sengoku period and early Edo period. She became the 21st leader of the Hachinohe clan after the death of her husband, Hachinohe Naomasa, in 1614.[2][3]