Spiritshipping

Spiritshipping is the slash ship between Jaden Yuki and Jesse Anderson from the Yu-Gi-Oh! fandom

Meeting
Jaden meets Jesse the first time in season 3 of GX. They meet on the rooftop of the Duel Academy after Jaden has a nightmare that he is woken up from by his dueling spirit Winged Kuriboh. Jesse, who is also able to see spirits, is looking for his best friend Rubin Carbuncle, a duel ghost, and finds it with Jaden. Jesse tells Jaden that he transferred to duel academy and they share a handshake in greeting. Both of them remark that it feels like they have seen the other before. Before they can introduce themselves properly, Jaden is called by his friends Syrus and Hassleberry to join the meeting in the Aula. Later on Jaden and Jesse share the first duel of the new semester under the supervision of the director and the new Professor Viper.

During the time in the Academy they become best friends, through bonding over their shared love for dueling and them seeing spirits.

After some time the new Professor turns out to work together with a demon named Yubel, which has a history with Jaden. Vipor uses the students to collect duel energy, which goes to Yubel, who wants to reincarnate himself. It is later on revealed that the Professor just wanted to save his son and didn't know about Yubel's plan.

Yubel succeeds in coming back and possesses one of the students, Marcel, to execute their revenge. It also sends the entire school to another world. Marcel challenges Jaden to a Duel, threatening him by saying that he whole school will be stuck in the other dimension and turning the students into duel zombies if Jaden doesn't duel them. Without a choice Jaden goes to take Yubel down, while Jesse searches for the Rainbow Dragon, the last crystal beast he needs for his deck to be complete. He finds the card and joins Jaden in his duel with Marcel to bring their friends and the school back home.

During the duel Yubel abandons Marcel's body, to show Jaden their real form. Jaden is shocked to see his old monster back. He had sent Yubel to space, being afraid of it's power, because it hurt all his friends during his childhood. What Jaden doesn't know is, that he was reincarneted and promised Yubel his love in his last life. Yubel reveals that it just wanted to protect Jaden and sees his punishment - sending it away - as his form of love for Yubel. Being obsessed with the idea to return Jaden's "love" now by hurting his schoolmates and friends, Yubel tries to end the duel. Jesse steps in and takes the damage that would have cost Jaden the duel and tells him to bring their friends home.

After the school and the people are back in their world it becomes clear to Jaden, that Jesse didn't return with them. Feeling guilty about what happened, Jaden tries to find a way to the other dimension to bring his best friend back.

Dark world Arc
After returning to the dark world, Jaden and his friends, who decided to accompany him, learn that if you lose a duel in this world, you die. They find a village full of monsters, who tell the group that they might have spotted Jesse in a slave camp. Jaden follows this lead and ends up duelling on of the Dark Worlds fiends Zure. After defeating Zure, he goes to Brron, the King of the Dark world, to end his reign. He succeeds in defeating Brron, but has to sacrifice his friends in the process. Only three friends remain (Jim, Axel and Syrus), but turn on Jaden, because they saw how the Duel changed him.

After some time, Jim and Axel, who travel alone now, come across a Village, which is under the siege of the dark army lead by a Supreme King. Jim decides to Duel the King, but finds out later that it is Jaden. He tries to free his friend, but loses the Duel. Shocked by what happened to Jim, Axel flees. Axel later teams up with Zane and Aster, two other friends and rivals of Jaden who came to the dark world as well, to free Jaden, from his curse. He succeeds, but he has to sacrifice himself.

Together with the now normal Jaden, they continue their search for Jesse. They encounter him at last, but he has changed, because he is possessed by Yubel. Zane takes on Yubel, but loses in a spectacular duel. After this Yubel as Jesse tells Jaden, that if he wants to get Jesse back, he has to follow the duel monster. Jaden does so reluctantly, being afraid of dueling, because of his crimes as Supreme King, but the Need to save his friend is stronger.

He duels Yubel at last, but he's having a hard time against it, since it is still Jesse's body that he is attacking. After saving Jesse's Crystal beasts from Yubel, he realizes that Jesse's soul was sealed in his Rainbow Dragon. In the end he succeeds in defeating Yubel and getting Jesse's soul back, but before they can leave the dark world, Jaden has to duel Yubel one last time to ensure the safety of all 12 dimensions. Since Jesse is injured he gives Jaden his deck to teach Yubel a lesson for him.

During the last duel between Yubel and Jaden it is shown that Jaden needs his power of the Supreme King to defeat the light of destruction, that possessed Yubel. He summons Rainbow dragon and fuses him with his strongest card and remarks to his duel spirit partner Kuriboh that he would like to show Jesse their fusion monster. Yubel gets jealous and asks Jaden if he loves Jesse that much to use his cards.

Season 4
Jaden encounters Jesse at a pier, after being inflicted with Darkness, the final antagonist. He duels Jesse, because he thinks that Jesse is the enemy. During the duel, Jesse can destroy the card in Jaden's deck that was inflicted with the Darkness and save Jaden. They team up again to save the school from their new enemy Darkness.

What follows is a duel against Fujiwara, who was also infected with Darkness. During the Duel Jesse sacrifices himself again to ensure Jaden's victory.

Fanon
It is one of the most popular ships in Yu-Gi-Oh GX and the most popular ship for Jesse. The Name SpiritShipping comes from their ability to see duel spirits.

Trivia

 * In the Japanese Version Yubel states during their final duel with Jaden that they believe all of Jaden's love belongs now to Jesse.
 * During the first time they meet, both of them remark that they had seen the other before. Theory is that they knew each other from another lifetime.
 * Jesse swears to protect Jaden from Yubel even if he has to sacrifice himself.
 * During their last duel against Darkness, Jesse devotes himself to Jaden in the Duel, since he feels like he owes Jaden for saving him in the Dark World and also remarks to himself that he wants to duel Jaden once it's all over.