As a result, the young boy was sent to a temple where his name was changed to or .

In 1536, his older brother Ujiteru died suddenly, unleashing successional disputes. His elder half-brother, , tried to seize the lordship, but the clan split into two factions. Yoshimoto's faction argued he was the rightful heir because Yoshimoto's mother (Jukei-ni) was the consort of Ujichika. Genko Etan's faction disputed this based on Genko's seniority, and that his mother was