Yu-Gi-Oh! Sevens Season 1 Episode 22 The Sealed Devil

In Yu-Gi-Oh! Sevens season 1 episode 22, titled "The Sealed Devil," the spotlight is on the henchman known as Nail Saionji - a calculating persona who has a fondness for tricking and provoking people, especially Romin. Nail is the only character who is aware of the secrets behind the seventh gear that Yuga and his friends possess, and he's keen on unlocking its potential.

At the start of the episode, the viewers are introduced to a dog that has stumbled upon a mysterious artifact concealed in a hole in the ground. Unbeknownst to the dog and everyone else, this artifact houses the spirit of Piroshenko, an evil demon who used to terrorize the world in the past. The spirit's release initiates some unexplainable incidents in the city and catches the attention of the authorities.

Meanwhile, Yuga and his friends, still unaware of Piroshenko's existence, are preparing to participate in the first Championship tournament in Goha City's populous history. Piroshenko's spirit is roaming the city, leaving a trail of havoc, but the tournament organizers refuse to call it off. The spirit believes the city is still beneath his rule and plans to punish anyone who challenges his authority.

As the tournament participants make their way to the location, Nail spots the dog carrying the artifact and quickly snatches it away. The dog gets injured in the process, and according to the vet, it was as if some evil power had drained its life force completely. It's apparent that the artifact had an evil spirit inside, and with it now in Nail's hand, it's only a matter of time before he unleashes it.

As expected, the tournament gets underway, with Yuga, Rook, and Gakuto competing in a battle against Yuo Zaizen, a crafty opponent who looks to use advanced game mechanics to gain an edge over the trio. Romin decides to sit this one out and watch from afar, knowing that Nail is lurking in the shadows. She doesn't want to be caught off guard with Nail's ploys.

Nail, on the other hand, sees the tournament as a perfect opportunity to test the artifact's worth. While observing the games, he opens the artifact, releasing Piroshenko's spirit, who lodges itself in Nail's card and posses it. The effect of Piroshenko's possession is not immediately apparent, and Nail seems unphased, making his way to Yuga and crew, pretending everything is normal.

As the tournament progresses, things start to get weird. The audience can feel a strong, malevolent energy emanating from Nail's vicinity, which Romin is particularly sensitive to. Yuga and Roa decided to sit out the next match, leaving Gakuto to face off against Nail. Gakuto, who believes that Nail is behind the petrification incidents that took place in the past, takes Shinemon Nitta's advice and seeks to strike a deal with Nail, a risky move that could jeopardize his and Yuga's plan.

In the final match of the tournament, Nail reveals a card named "Sealed Demon," which is the card that Piroshenko's spirit possessed. Nail's strategy seems to revolve around using the sealed demon card to drain the opponent's energy and lay a trap to make it useless. The effects of Piroshenko's spirit possession become clear when Nail changes drastically.

The episode is filled with a lot of suspense, especially in the latter half, where the viewers are left to wonder about Nail's true agenda and how Piroshenko's spirit may affect his actions. It's a must-watch episode that will keep the viewer on the edge of their seat from start to finish.