Yu☆Gi☆Oh!: Go Rush!!

Two siblings Yuuhi and Yuamu Oudou are inherited from their parents with Ultraterresterial Trouble Solutions, a company to hunt for aliens. These two people although never caught any alien before but determined to do so. Yuuhi is desperate to catch these as he believes these aliens have stolen his Earthdamar. One day while searching for an alien in a forest, they found similar scenery of crop circles around the fallen trees with a mysterious spaceship. They further explore it with curiosity and meet with Yudias Velgear, an alien from a Velgear Star Cluster. Yudias asks them to teach it the rules of the elementary school kids’ card game Rush Duel. Yudias believes this game can save its planet from a drastic war. Yuuhi and Yuamu agree but eventually realize this interaction is not merely a coincidence.