Faithshipping

Faithshipping is the het ship between Yusei Fudo and Aki Izayoi from the Yu-Gi-Oh! fandom.

Canon
Aki was originally part of the Arcadia Movement cult who were interested in her psychic powers. After Rua and Ruka challenge Aki to a duel, she meets Yusei and sees that he has a Dragon Birthmark, too. She leaves in an explosion and tells him to leave her alone. He sees her again in the Fortune Cup. Aki hurts some of her opponents, causing her to be hated by the audience. When Yusei duels her, they call her him to defeat her dispute, not liking him at first.

During the duel, Aki reveals that she created a new personality that loves destruction. She attacks Yusei relentlessly, but Yusei defeats her, and her mask breaks, leaving her crying. The cult leader Divine takes her away.

Later the cult is destroyed by the Dark Signers, and Aki is left in a coma. When she comes to, she felt that she has no place, and her psychic powers rage out of control. Yusei duels her, feeling that it is the only way to reach her. During the duel, her father, who had feared her when she was a child, steps in the way of the duel, and she leans to control her power to stop herself from hurting him. She joins the Signers from this point on.

During the duel with the Dark Signer Misty, she is blamed for the death of Misty's younger brother. Divine shows up and manipulates her again, causing her to regress back to her unstable state. Yusei can trick Divine into confessing that he was responsible for the death of Misty's younger brother. Aki regains control of herself and wins the duel.

Aki later takes an interest in Turbo Dueling, and Yusei teaches her. During the World Riding Duel Grand Prix, she serves as the team's substitute duelist.

In the epilogue, Aki decides to become a doctor while Yusei was staying in Neo Domino City. She thanked Yusei and was about to tell him that she loves him, but ended up stopping midway and instead said that she was glad to have met him. She decided against saying goodbye and promises to return someday.

Fanon
Faithshipping is a popular pairing in the ''Yu-Gi-Oh! 5D's'' fandom. Fans felt that the two grew together and that Yusei helped Aki throughout the series.

Fandom
FAN FICTION
 * Yusei/Aki on FanFiction.Net
 * Yusei/Aki on FanFiction.Net

Trivia

 * The pairing is named so because Yusei and Aki put faith into each other to defeat the Dark Signers.
 * Out of all the 5D's protagonists, Yusei and Aki have the most synergy between their decks, to the point where the Plant Synchron deck archetype is named "Yusei-hime" (Princess Yusei).
 * Ruddy/Blood Rose Dragon, the upgraded Black Rose Dragon, has an effect that negates destruction effects, something Yusei's Stardust Dragon also has.