After Toshiie had the honor of attending the cherry blossom viewing party held in Sanbo-in of Daigo-ji Temple with his wife Matsu on April 20, he transferred the reigns of the family to his legitimate child Toshinaga and retired on the next month May 25, and he left for Kusatsu for toji (hot spring cure).
3月15日に醍醐寺三宝院での花見に妻のまつと陪席すると、翌月の4月20日に嫡子利長に家督を譲り隠居、湯治のため草津に赴いた。