After performing a dance, Muneharu killed himself with a death haiku, which read: Now is the time to go beyond this life, leaving a samurai's name as long lasting as moss on a pine tree.
そして舞を踊った後、「浮世をば　今こそ渡れ武士の　名を高松の　苔に残して」という辞世の句をしたため、自害した。