Masachika decided to retire after two years, and appointed Masakatsu's son Tsubanobu as his successor.
He was a cruel lord, subject to frequent fits of rage, going on rampages and even killing retainers.
His retainers called on Masaaki to step back in; however, the shogunate acted first and threatened the attainder of Fukui Domain in 1686 and placed Tsunamasa under house arrest on grounds of insanity and incompetence.
However, as Fukui was a famed domain founded by Tokugawa Ieyasu's son Yūki Hideyasu, special consideration was given.
Fukui Domain was reduced by more than half, to a kokudaka of 250,000 koku, and Masachika was ordered to resume the position of daimyō.