Though a few examples remain in the historical documents after 'the abolition of slavery,' which is thought to have occurred from the Kanpyo era to the Engi era, the class most likely disappeared shortly.
寛平から延喜の頃と考えられている「奴婢の廃止」より後の史料にわずかに用例が残っているものの、間もなく消滅したと考えられている。