After the death of Shingen, he was constantly in conflict with Shingen's cousin Katsuyori TAKEDA; although he once took part in the Battle of Nagashino, he pulled out of the battle without asking for consent.
信玄の死後、従兄弟の武田勝頼とは対立が絶えず、長篠の戦いの際には勝手に戦線を離脱。