Yu☆Gi☆Oh!: Go Rush!!

Ultraterresterial Trouble Solutions is a company inherited by two siblings Yuuhi and Yuamu Oudou from their parents. This company works to hunt aliens and Yuuhi and Yuamo never caught any alien before. But they are passionate about it, however, Yuuhi is desperate about this as he believes these creatures have stolen his Earthdamar. While searching for extraterrestrial creatures one day, Yuuhi and Yuamo spot a mysterious crop circle around the fallen trees in a forest. They explore it further and find a mysterious spaceship there. They went inside and surprisingly met Yudias Velgear, an alien from the Velgear Star Cluster. Yudian asked them to teach it a kid card game Rush Duel.  This is a famous elementary school game and Yudias believes this game can save its planet from a war. Both siblings agree to this. But soon, they realize that they didn’t meet coincidently.