D.Gray-man - Season 2 Episode 19

The story recaps on Allen being stabbed by the Level 3's thread. It affects his molecule structure and partially broke it down. While this is happening the whole Asian HQ is going into hiding, along with locking down their information so the Akuma can not damage it. Bak awakens the guardian deity by engraving a mark on his hand to trap the Akuma in beams of light that come from the pillars around it. They run with Bak carrying Fou, they go into a hallway and Bak again uses the guardian deity to close the wall, while it is closing Bak sees the aproaching Akuma and Fou transforms into Allen to fight it. Allen begins to cry blood from his eye and when a tear hits the ground his Innocence manifests around him and he warps infront of the gate Bak finaly opens the wall and Allen jumps onto the back of the Akuma damaging it with his right hand.