Some say that since Nobuto was pro-Hidetsugu-TOYOTOMI faction, he was slandered by Bugyo (the magistrate) such as Mitsunari ISHIDA and others, and driven into a downfall.
なお、信任は親豊臣秀次派であったため、石田三成ら奉行から讒言されて失脚に追い込まれたとも言われている。