Betsushiki

In the Edo period, a betsushiki (a female weapon master who trains women in the feudal lord's harem) named Rui Sasaki is searching for a husband, ideally someone weaker than her, but still handsome. She meets other betsushiki with distinct personalities, listens to stories about married life, attends mixers, goes to Comiket, and experiences farewells. Source: ANN