Koushoku no Chuugi Kunoichi Botan

This is an anime adaptation of Tanabe Kyo’s manga.

Botan is one kunoichi About to marry his master. One day, the uncle of the master of Botan, wishes to take the latter for bodyguard. Knowing that the clan is in decline and to help its master, Botan Accept. However, the latter and her master did not know that the mission of bodyguard, is actually a pretext of the uncle to have sex with Botan, in exchange for finances to help the clan.