Ninja Slayer From Animation

Neo-Saitama in Flames, Part 3: And You Will Know Him By the Trail of Ninja (1x23)

Air date: Sep 17, 2015

With assistance from Nancy, Ninja Slayer challenges the Six Gates ninjas on his way to Laomoto's castle keep. A strange phenomenon tortures Ninja Slayer's mind with images of the dead, including his wife and son.