Rise of the Teenage Mutant Ninja Turtles Season 2 Episode 13a - Finale Part 3: Anatawa Hitorijanai Episode Title:Finale Part 3: Anatawa Hitorijanai.Episode Description:The Turtles are forced to retreat to the forests of New Jersey. April comes upon the mortally wounded Karai who transfers her soul into April's body, and then rejoins the Turtles to teach them the Hamato Ninpo. In Karai's stead, Shredder prepares to drain Splinter's life essence to make him fully invincible, but he needs a rare substance called Empyrean for the ritual. Draxum leads the Shredder to his lab in the Hidden City, where he has stored some Empyrean, only to turn against him upon realizing that the Shredder is the threat against which he intended to create his Yōkai army in the first place.