"Live in the shadows, die in the shadows. That is the shinobi way."
"...... I will train my blade for you!"
"Summoner! What would you have me do, the blade in the dark?"
A ninja said to have lived in the ruined Bariura Empire. After the string of assassinations in the empire ended, a girl saw a strangely clothed person around dawn, though it was still mostly dark and it was never proved to be Oboro. Even today there is debate over his time in Grand Gaia, such as what his intentions were and under whose orders he was acting under.