In the bustling and futuristic city of Heartland, a young boy named Yuuma Tsukumo has a dream that everyone his age wants to achieve—earning the title of the greatest duelist! Sadly, due to his lackluster dueling skills, this dream is far from achievable. But when the school bully, Ryouga "Shark" Kamishiro, splits the key given to him by his father into two pieces, he inadvertently sets Yuuma on a collision course with his dream.
Retaining one half of the key, Yuuma begins a duel with Shark, but soon realizes that his inexperienced skills are no match for him. In a sudden turn of events, Yuuma's key repairs itself, and the "Door of Destiny'' appears before him. Using the key to open it, Yuuma is greeted by an alien by the name of Astral—a being only he can see.
The bewildered Yuuma soon learns that his memories have been divided into 100 "Number Cards," all of which he must retrieve. However, he is also not the only one looking for them. Bombarded by these revelations, Yuuma, alongside Astral, must defend the world from the upcoming threats that loom over Heartland City—regardless of any divine intervention that may occur.+ More
More Seasons
Characters & Voice Actors
Astral
Main
Irino, Miyu
Japanese
Kamishiro, Ryouga
Main
Garbolino, Davide
Italian
Mizuki, Kotori
Main
Stevens, Eileen
English
Tenjou, Kaito
Main
Kromer, Christopher
English
Tsukumo, Yuuma
Main
Itou, Mika
Japanese
Cathy
Supporting
Kobayashi, Yuu
JapanesePromotion Videos
CM 2
CM 1
Recommended for you
Sand Land: The Series
ONA
24m
Thrud
ONA
20m
i Ris the Movie: Full Energy!!
Movie
60m
Detective Conan Movie 27
Movie
111m
Look Back
Movie
62m
Blue Lock: Episode Nagi
Movie
90m
Time-Patrol Bon
ONA
27m
Rising Impact
ONA
26m
Mahjong Soul Kan!!
ONA
5m
The Grimm Variations
ONA
40m
Hanma Baki vs. Kengan Ashura
ONA
62m
Shadowverse Flame: Arc-hen
TV
23m
Himitsu no AiPri
TV
23m
Tonari no Youkai-san
TV
23m
