D.Gray-man - Season 2 Episode 8 The Road of the Pledged

Allen finally opens his eyes and wonders how he is alive. He discovers from Asian Headquarters Chief, Bak, that it was his own Innocence, which although was destroyed, lingered on as a cloud of particles and actually filled the hole of his damaged heart, saving his life. Determined to rejoin his companions, get to Edo, and fulfill his promise to Mana, Allen vows to restore his Innocence at all costs. However, he discovers it won't be as easy as he thinks! Also, Allen also meets Wong, who is Bak's assistant; Fou, who is the guardian of the Asian Headquarters; and three division workers: Rikei, Shifu, and Lou Fa.