Tale of The Yokai

"Tale Of The Yokai" is 20th episode in season 3 and the 72th episode overall. It aired on August 9th, 2015.

Official Description
When the Turtles are accidentally transported to the past, they happen to cross paths with a familiar ninja clan.

Characters

 * Leonardo
 * Donatello
 * Raphael
 * Michelangelo
 * Renet
 * Splinter (Human)
 * Shredder
 * Tang Shen
 * Miwa/Karai
 * Yuuta
 * The Hamato Ninja's

Trivia

 * First and only appearances of Tang Shen, Yuuta and the Ninja's
 * Last appearance of Renet.
 * This is the 1st time a character (Tang Shen) dies on screen.
 * This is the 2nd time Renet kisses Mikey.
 * This episode's title is similar to the Teenage Mutant Ninja Turtles: Legend of the Yokai, a short film and fan-art compendium website that was made to promote the 2014 film.
 * Both Minae Noji and Hoon Lee voiced the parents of characters they had already played. Minae Noji, known for playing Karai in the 2014 film, voiced Karai's mother, Tang Shen. And Hoon Lee, the voice of Hamato Yoshi, also voiced his father Hamato Yūta.
 * This is the second time it happens, the first being in the 2012 TV series episode Buried Secrets, where Renae Jacobs, the voice of April in the 1987 TV series, voiced April's mother.
 * The way Casey and April fade away in the picture on Donatello's T-Phone was an homage to the Back to the Future films, where after changing the course of history, Martin Mcfly sees his siblings disapearing from a picture with him.
 * Michelangelo even states that "It's just like in that movie!", implying that they have seen the Back to the Future film, or something very similar.
 * When appearing for the first time Hamato Yoshi is holding the Tessen would one day give to Miwa, but as she was presumed dead he gave it to April. The tessen and two family photographs are some of the only possessions he was able to save from Saki's attack and the destruction of their home.
 * When trying to convince Tang Shen that they're "friendly Yōkai" Michelangelo dances and humming the 1987 TV series' theme song.
 * Michelangelo's final dance move was taken from the caramelldansen dance.
 * The sword Saki uses when training with Yoshi is the same 400 year-old katana blade Chris Bradfors had on his shelf in the episode New Friend, Old Enemy.
 * Leonardo's "We yōkai will steal all of your souls… THROUGH YOUR BUTT!" actually refers to a japanese legend.