1960s --- Tokyo. Shin is a boy who lived happily despite being poor, loses his mother who is his only family member, and falls into deep misfortune. Itsuki, a boy who saves Shin also lost his older sister. Those two boys are joined by Tae, a girl who can see youkai and together with Shin's guardian spirit Suu-san and new Youkai such as Nekomata, they take on a mysterious incident in order to retrieve the souls of their precious family! And what is the shocking truth that awaits them...!? An origin story for how Lord Enma became the rule of the Yomakai. (Source: Wikipedia, edited)

Sixth Youkai Watch film.

"Blue Eyes White Dragon will bring victory" while "Red Eyes Black Dragon will bring the potential of victory". A shy duelist stumbles upon the legendary Red Eyes Black Dragon, with that card in his possession, he must learn to bring out his confidence to duel. (Source: ANN)

Low on luck after a series of unfortunate events, You Keika works part-time to try bringing himself out of a life of poverty. After a strange encounter with a white-haired man in a junkyard, You wakes up to discover that he was killed in a sudden accident and has become a spirit. The man he had encountered, Tanmoku Ki, is revealed as the 13th Youmeshi of the Tanmoki, the highest-ranking exorcist family of China. Noticing the wandering spirit, he offers You the opportunity to form a pact: he will offer You protection from humans and in return, You will have to become his spirit shadow, keeping him safe and guarded at all times. From then on, the two face untold challenges in the spiritual world, striving to keep those around them safe from harmful spirits. Along the way, the pact they formed grows into something more; a bond that neither of the two ever expected. Behind their roles as master and servant, a lingering admiration begins to emerge. [Written by MAL Rewrite]