Tasuku uses a Dragon World deck, using Jackknife Dragon as his Buddy. Tasuku mostly focuses on setting up the field to cast Gargantua Punisher!!, for that he includes high power monsters such as Jamadhar Dragon to quickly destroy the opponent's center monster. He uses a large ammount of spells that destroy the opponent's monsters to make it easier to attack directly, while including Dragonic Grimoire to refill his hand after leaving it empty. After losing to Gao Mikado he gave Gao his Gargantua Punisher!!, and Gao gave him a Dragonblade, Dragobrave as a sign of friendship and rivalry. He uses Dragobrave as his signature item afterwards.
He later creates a new impact, Dragonic Punisher to replace Gargantua Punisher!!, when facing Super Armordragon, Galvanic Feather Dragon and obtained Galvanic Feather Dragon as a prize for defeating him. He uses Jack's ability to evolve into different monsters to adapt to almost any situation, while giving Jack additional soul to protect him. Before his 2 vs 1 fight against Disaster, Kyoya sneaked a Jackknife "Gold Ritter" to his deck, an extermely powerful item that gives Tasuku a huge advantage, but at the cost of temporarily turning Jack into a mindless puppet.
This strategy tends to drain his hand and field very quickly so he use Abyss Symphony to replenish it and tries to reduce his opponent's life to 4 or lower quickly and finish them with Distortion Punisher!!, if he fails to do so on his own turn he uses Purgatory Flame that Resides Within the Body to deal the damage he missed on his own turn while negating an attack. This pushes the opponent into using an Impact, which allows him to use Distortion Punisher!!'s "Counter Final" to make the opponent's Impact backfire, turning what would seem like his defeat into his victory.
"A binding pact made in shadows. Arise, all knights of despair. Dark Luminize! Purgatory Knights Conviction!"
After successfully completing his training, he now uses a Star Dragon World deck with his new buddy, the evolved Star Guardian, Jackknife. His deck is focused on cards with the Crossnize ability, allowing him to have Jackknife equip a monster and gain new abilities. And if the opponent has 4 life or less, Tasuku can use his new impact, Radiant Punisher!! to finish off the opponent. During his fight against Gratos, he used Radiant Guardian, Jackknife "Aster", which allows him to gain many abilities when he has Crossnized with a Dragonarms card.
"Unite, elite warriors of the future! Radiant Evolution, Luminize!"
Following Jack's departure to Star Dragon World, Tasuku was left without a deck, however in order to help Gao who had lost his confidence in himself after losing to Ikazuchi, he borrowed one of Gao's old decks in a buddyfight to help him, the deck inparticular was Gao's "Explosive Dragon Fang".