Original: Nene , wife of Toyotomi Hideyoshi , was known to overrule her husband 's decisions at times and Yodo , his mistress , became the de facto master of Osaka castle and the Toyotomi clan after Hideyoshi 's death .
Simplified: The Toyotomi Hideyoshi 's ( 1536 -- 1598 ) mistress became the real master of Osaka castle after his death .