Hanyou no Yashahime: Sengoku Otogizoushi - Ni no Shou

Synopsis

Towa and Setsuna are attacked by a gigantic earth-type rock demon due to them being the twin daughters of the mighty Sesshoumaru, with the belief that destroying them will make him mighty as well. Towa is about to beat him with her newly acquired Zanseiken, but again hesitates as he appears "guilty" for actions. As Towa's overly kind heart and unwillingness to kill nearly gets her killed herself, Setsuna defeats the rock demon with a blast of pure demonic energy from her Yukari no Tachikiri. As their adversary splits into three child-like earth demons and flee with the promise to attack again, Setsuna informs her twin sister that it may be best for Towa to return to the modern era as she believes that she is perfectly capable of saving their mother Rin and putting an end to Lord Kirinmaru single-handed. Elsewhere, Moroha disguises herself in front a set of four male demons in the shape of porcelain masks who inform her of just how strong and notorious her parents have become before she was born: Inuyasha's ultimate triumph over Naraku and Kagome Higurashi having defeated and imprisoned a very powerful daiyōkai with an extraordinarily strong sealing arrow within the seven months she had lived in the feudal era. The four masks mock Kagome's daughter as she is only a quarter-demon but still think she is trouble. Annoyed, Moroha reveals herself and admits that she does not yet possess spiritual powers to equal those of her mother, but this statement causes the demon masks to open a portal to avoid being exorcised/purified by her anyway. Now that she knows that her parents' notorious feats are the reason why that business in slaying minor or major-league demons was declined regardless of her own reputation as "the Demon Killer." Takechiyo then appears and informs Moroha that he has requested her help in his homeland, where Moroha meets the elder raccoon-dog Hachiemon, who tells her that it was he who had brought her to village of Northern Wolf-Demon Tribe at the behest of Inuyasha and Kagome when she was a newborn.

(Source: Wikipedia)