His role is cheering for his friends. He is famous for getting the "shivers" when his friend turns the tables of the Duel.
Futoshi along with Ayu arrived at 'You Show Duel School' to help out with the flood of applicants which was caused by Yuya's Pendulum Summon against Strong Ishijima and was impressed by the number of students wanting to join their Duel School. He was also excited to see the Pendulum Summon again but was surprised when Yuya couldn't do it in the exhibition match against Yuzu. But he still believed in Yuya and declares that he is one of Yuya's biggest fans.
Later on, he along with Ayu and Tatsuya all asked to see a Pendulum Summon which Yuya had finally started to get used to, but they were interrupted by Shingo Sawatari, who invited them to LDS and offered the use of the Center Duel Field to Duel Yuya. After Shingo forcibly took Yuya's Pendulum cards, Futoshi along with the others were taken hostage on top of a suspension bridge in "Dark Town's Prison Tower", and Futoshi in particular nearly fell from the tower, to his extreme distress, but he was saved by Yuzu. Yuya was able to rescue them win against Shingo and get his cards back from him. During Yuya and Sora Duel, he was impressed by Sora's Fusion Monster and was surprised to find that Pendulum Monster are sent to the Extra Deck when they are destroyed.
When the LDS accused Yuya of the attack on Shingo and challenged them to a face off in order to clear his name, Futoshi cheered Yuya and the others on. Later on in the Duel between Yuya and Reiji, he was extremely surprised to see Reiji's ability and was left speechless.
When Yuya tried to ask him for help so that he could qualify for the 'Junior Youth Championship', he denied stating that he belonged to the 'Junior' Division while Yuya belonged to 'Junior Youth' Division, so their Duel would be invalid.
During the Duels arranged by Nico Smiley to help Yuya to qualify for the 'Junior Youth Championship', he along with Ayu and Tatsuya became Yuya's cheering squad and cheered for him during his Duels. But on request by Nico, they stayed behind the scenes during Yuya's qualifying Duel against Gongenzaka, but later on was allowed to go in-front and cheer him and congratulated Yuya when he won and finally qualified for the Championship.
Futoshi along with the rest of the members of YSDS, departed for the Maiami Championship, were he was to take part in the 'Junior' division of the Championship. He had his first Duel on the first day itself against Takeshi Shimizu, and won it easily.
Futoshi uses a "Sketch" Deck which focuses on Beatdown tactics. The ace of the deck "Sketch Beast - Tyrano" can be Tribute Summoned using a single "Sketch Beast" Tribute, and activates its effects as soon as it is Tribute Summoned, allowing "Tyrano" to destroy a monster on the field and gain half its ATK, allowing him to deal a lot of damage to his opponent's Lifepoints. Futoshi reinforces his deck with cards to protect his monsters to ensure a successful Tribute Summon.