Yusaku was one of the six kidnapped children, who were used for the Hanoi Project. He woke up in a white, empty room, with VR goggles. He placed them on, and was forced to Duel, with the penalties of being both electrocuted and having nothing to eat if he lost.

History. Yusaku losing a Duel during the Hanoi Project. Yusaku is rescued from the Hanoi Project. ... As he picked up the cards, Yusaku and Ryoken asked one another if they played Duel Monsters, and Ryoken offered to show Yusaku his Deck at his house.

How to Link Summon. During their Main Phase, the turn player can Link Summon a Link Monster from their Extra Deck by sending face-up monsters they control to the Graveyard as Link Materials; the number of Link Materials must be equal to the Link Monster's Link Rating.