After TAIRA no Yoritsuna was killed in the Heizenmon War in 1293, the Adachi family was permitted to be re-established, and Tokiaki took over as the head of Akita castle, the estate of Adachi family.
永仁元年（1293年）平禅門の乱で平頼綱が滅ぼされた後に安達一族の復帰が認められ、時顕が安達氏家督である秋田城介を継承した。