- Died: 1568
Masaharu was at first a vassal of the Amako and later sided with the Môri. In 1563 Masaharu entertained Môri Takamoto with a banquet when the latter was on his way to lead the Môri campaign against the Amako. Takamoto died suddenly while staying at the Wachi household, and Masaharu was immediately held under suspicion by Takamoto's father, Môri Motonari. He was later killed on Motonari's orders at Itsukushima.
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005