Get ready for a wild ride as Hikaru, your average high school student, finds himself thrust into a world of mecha battles, giant cubes, and mysterious voices! After witnessing an explosion and a strange cube, he's forced to deal with a giant metal arm that's suddenly attached to his back. But this isn't just any ordinary arm—it's a powerful trigger arm, and someone wants it back. Let's watch the video to see what happens when this ordinary kid is thrust into an extraordinary adventure.