ACMA:GAME

A live action adaptation of the manga ACMA:GAME.
 
Oda Teruasa, a gifted high school senior who is the heir of Japan’s wealthy trading company Oda Group, lost everything 13 years ago when his father was murdered by a mysterious organization. The culprit was in fact after a weathered key which was in Seiji’s possession. Whoever acquires this key will allegedly see their fortune rise with the number of keys they collect, and with 99 keys, one can gain control over everything in this world. Entrusted with this key by his father just before the fatal incident, Teruasa manages to escape overseas, and since travels the world accumulating knowledge and experiences.
 
Returning to Japan after 13 years to avenge his father, Teruasa finds himself entangled in the “Akuma Game”, a life-threatening battle of wits against rivals aiming for the demonic key.

A 2 episode spin-off set after the drama and leading up to the movie.
“The new key” begins a few months after the collapse of Gungnir when Teruasa and Senya, who had been on a journey to collect the remaining “Devil’s Keys” return to Ui and Yuki. They learn that someone with a key is on the island where the final tournament was held. Without telling Yuki, Teruasa, Senya and Ui head back to the island. Inside the crumbling mansion, there was a shadow of someone—or something. After chasing the shadow into the mansion, they realize Senya has suddenly disappeared. Then, before the two of them appears a woman, Kizuki Mai, who is trembling and crying. However, the moment they call out to her, the woman bursts into loud laughter and summons the demon Elva with a “Devil’s Key” she pulls from her pocket. At that point, another man wearing white clothing appears. Who are these two people!? The life-or-death game for Teruasa and Ui begins once again.

Set after the final episode of the drama series. Teruasa, whose father was killed by a mysterious organization, continues his journey to destroy the 99 devil keys. Before him appears Kuroda Koki, a priest running a religious cult, and his sister Kuroda Ran, who has the power to read minds, and Hoshin, the enemy of his father, who holds the 99th key.