Time has passed since Inuyasha and Sesshoumaru’s story, now the brothers’ daughters open the door on a new legend.
It is several decades since the main events in Kaede’s village.
Everyone is living quietly since being separated in the battle with the butterfly (Kochou).
Also living there are Inuyasha and Kagome’s daughter Moroha, who was taken in by Rin, and Setsuna who was taken in by Kohaku after the battle.
The two of them now begin their battle to stop the ambitions of Ryuumagatsuki (Ryuukagetsu? I have no idea how to read 竜禍月, it’s a made-up word and there’s no furigana on it), a mortal foe of Sesshoumaru whom he risked his life fighting.
However, Sesshoumaru actually had one other daughter.
Hokay, so everyone got separated by an angry butterfly, Sesshoumaru is not necessarily dead but possibly not on the up-and-up, and Moroha’s profile on the website says she’s been living alone but this seems to say she’s being raised by Rin. I don’t know what the source for this image is, though.