Yu-Gi-Oh! SEVENS: The One Who Is a Throne

SYNOPSIS

A massage chair showed up out of nowhere in front of the Road Laboratory! As Yuga and co. were trying the chair out and having a nice massage, they were suddenly sent underground. A massage chair drone named Sebastian then emerged from the darkness, proclaiming itself as "Nail's butler and throne". Thus began the Duel between Yuga and the "King of Chairs"!