He had a conflict with Amakusa gonin shu (five local samurai in Amakusa) over the construction of the Uto-jo Castle, but conquered them with the cooperation of Kiyomasa KATO and owned the fief of Amakusa yielding about 40,000-koku as well.
その宇土城普請のことで天草五人衆と揉め事となった（天正天草合戦）が加藤清正らの協力で平定、天草4万石あまりも所領とする。