Y.Y.

Y.Y., also known Old Man Hitogen (瞳玄老師, Hitogen Roushi) is a minor character appearing in Code Geass: Genesic Re;Code. He appears in the Code Geass: Crimson of the Blood Pact storyline, granting Kigisu the power of Geass. He is also the creator of the Knightmare Treasures.