It is possible that because they knew each other, Takatane was invited by Nagauji to join the Hojo clan while he was still in Izu after the fall of the Horikoshi Kubo's house.
その縁があり、高種が伊豆に下向後、堀越公方家が衰退すると、長氏に一門として取立てられたものと推測される。