Past Futaba's Brother

Futaba's twin brother from her previous incarnation.
He missed his sister when she was sent away due to being a twin and thus seen as a bad omen. He made contracts with four of the Twilight faction's previous incarnations, and also Gaku, whose present incarnation was alive back then.
Due to a curse placed on his family by an enemy onmyouji, he began to feel himself losing his mind, and so begged Toichiro's previous incarnation to kill him so he wouldn't harm his sister, and past Toichiro obliged.
According to Chizuko, he, alongside his sister and their ayakashi comrades, has reincarnated into the Meiji era./