Hakkou: Yoshitsune Ibun

From Aerandria Scans:

There is only one wish in the heart of Shanaou (Minamoto no Yoshitsune) - the restoration of the Minamoto clan. He lurks in the capital of Japan where he meets Musashibou Benkei - a thief causing a lot of trouble near the large bridge of Gojou. By chance, Benkei discovers Shanaou’s great secret, so Shanaou is determined to kill the thief to protect his secret, but...?!