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.
In 1595, Naoe died early, and at the age of 10, Neneko married Hachinohe Naomasa, who was one year younger.
Toshinao advised her to remarry, but she refused, shaved her hair, became a nun, and changed her name to Seishin-ni.
Toshinao further recommended adoption with the Nanbu hanshi, but Seishin-ni also refused.
As Naoyoshi was primarily in Morioka as the Southern Clan's main retainer, Seishin-ni actually ruled Tono.