Season
Season 1 Episode
- Season 1 Born in Red Black
- Season 1 Machine of Vengeance
- Season 1 Last Girl Standing, Part 1
- Season 1 Last Girl Standing, Part 2
- Season 1 Rage Against Tofu
- Season 1 Surprised Dojo
- Season 1 Bane of Serpent / Zazen and Ninja
- Season 1 Apocalypse Inside Tainted Soil
- Season 1 One Minute Before the Tanuki, Part 1
- Season 1 One Minute Before the Tanuki, Part 2
- Season 1 Menace of Dark Ninja
- Season 1 Day of the Lobster / Day of the Lobster 2
- Season 1 Swan Song Sung by a Faded Crow, Part 1
- Season 1 Swan Song Sung by a Faded Crow, Part 2
- Season 1 Sushi Night at the Barricade
- Season 1 At the Treasonersvill
- Season 1 Treasure Every Meeting
- Season 1 Ever Felt Cheated?
- Season 1 Stranger Stranger Than Fiction, Part 1
- Season 1 Stranger Stranger Than Fiction, Part 2
- Season 1 Neo-Saitama in Flames, Part 1: Like a Bloodarrow Straight
- Season 1 Neo-Saitama in Flames, Part 2: Darkninja Returns
- Season 1 Neo-Saitama in Flames, Part 3: And You Will Know Him By the Trail of Ninja
- Season 1 Neo-Saitama in Flames, Part 4: Dark Dusk, Darker Dawn, Part 1
- Season 1 The Best of Ninja Slayer from Animation
- Season 1 Neo-Saitama in Flames, Part 5: Dark Dusk, Darker Dawn, Part 2
Ninja Slayer From Animation - Season 1 Episode 1 Born in Red Black
6.70 15 minutes Seeking vengeance after nearly being slain by ninjas who also killed his wife and child, Fujikido Kenji merges with the spirit of Naraku Ninja to become Ninja Slayer, the ninja that kills ninjas.
