Amago clan
From 1540 to 1542, he worked as the general, replacing Ōuchi Yoshitaka, in the war with the Amago clan. However, when Ōuchi's troops lost heavily in 1542, Yoshitaka's interest in war faded, and he began to incline to cultural activities. Because of this, the civil official Sagara Taketō became close to Yoshitaka, and Harukata's relationship with Yoshitaka declined.