D. Gray-Man Season 4 Part 1 contains episodes 78-90 of the anime directed by Nana Harada.

With Kanda left behind to battle Skinn, Allen and the crew make their way through the crumbling Ark. The path through is filled with dangerous traps left by the eccentric Jasdevi but Allen’s unique training with Master Cross gives him a bizarre advantage. Who knew gambling and identifying different types of sake would ever come in handy? But the games end when Jasdevi reveal their true form!

Special Features: Todd Haberkorn Follows Through, Episode 83 Commentary, Episode 87 Commentary, Textless Opening & Closing Songs, Trailers.