Ninja Gaiden II: The Dark Sword of Chaos, as known in Japan as Ninja Ryuukenden II: Ankoku no Jashin Ken (忍者龍剣伝II 暗黒の邪神剣), is the sequel to the original NES game Ninja Gaiden and one of the hardest games for the console. It takes place a year after the first game, where Ashtar continues Jaquio's goal of taking over the world and kidnaps Irene Law to further his plans. Ryu Hayabusa must now find Irene and stop Ashtar before demons and darkness spread everywhere again.

For this run, eien86 opts to go for a pacifist approach, only killing when its necessary to progress. In addition, he also follows a rule where none of the red spheres spread throughout the game can be touched. A program called JaffarPlus was used to facilitate in the creation of this run.