Monochrome Mobius: Rights and Wrongs Forgotten

Ennakamuy, a vassal state of Yamato located in the outlands is home to a young man who lives with his mother and little sister. One day, while this man is investigating a minor matter at the behest of the Owlo (Emperor), he encounters a mysterious girl. She tells him something unbelievable - that his father, thought to be dead, is actually still very much alive. In search of the truth, he decides to leave his village and head for Arva Shulan, a mysterious country that does not exist on any maps. He surpasses one obstacle after another to retrace his father's footsteps. Along the way, he meets up with like-minded companions, going through…