Yooseven

Yooseven is the slash ship between Saeyoung Choi and Yoosung Kim from the Mystic Messenger fandom.

Canon
The two boys are fellow RFA members and close friends. Saeyoung often teases Yoosung and plays pranks on him. Yoosung easily believes what Saeyoung says since he thinks Saeyoung knows a lot. He even admitted it in a chatroom after being fooled by Saeyoung. The two really care about each other and Saeyoung does apologize to Yoosung if things go too far.

Casual Story
Saeyoung talked about how stressed he was and how he wanted to get rid of it. Yoosung joined the chatroom and told Saeyoung to learn to make coffee since he himself was learning to make coffee. Saeyoung said that Yoosung had a rare disease called "Pass Out After Drinking Caffeine Syndrome" and that he was going to pass out soon. Yoosung didn't believe it at first, but believed it after Saeyoung sent a photo of a page for POADCS on Cherrypedia. Saeyoung recommended that Yoosung should drink chocolate milk before fainting to increase his blood pressure and wake up faster.

Later, Saeyoung acted as if Yoosung was about to die then left the chatroom. Yoosung, who didn't notice Saeyoung leaving, started sending paragraphs that he thought would be his last words. Jaehee revealed that Yoosung was tricked and that he did not have a rare disease.

Yoosung's Route
Saeyoung informs the rest of the RFA members of the bomb in MC's apartment, that an enemy hacker has altered and that now poses a danger to MC. Two days later, Saeyoung find a hideout of a group the hacker belongs to. He intends to go there and confront the hacker on his own, but Yoosung, concerned for him and wanting to protect MC, asks to go with him. After some convincing, Saeyoung lets him come with. The next day, they reach the hideout and successfully infiltrate it, but they meet the enemy hacker. In a fight with him, Yoosung manages to keep the hacker occupied so Saeyoung can run away with a switch that would blow up the three of them and MC in her apartment if anyone pressed it. During a short time Yoosung spends with the hacker alone before being rescued, he loses his vision in one eye which makes Saeyoung feel very guilty.

Bad Relationship Ending 1
Yoosung confesses that he only liked MC because she reminded him of Rika and he goes to Saeyoung's house where Yoosung asks to live with him. Saeyoung declines and the screen goes dark, to Yoosung's confusion. Saeyoung tells Yoosung that they have to make an announcement. Saeyoung announces that the game will end for not having enough likability points and that the player should still play again even if they hate the characters. Because Yoosung remained confused throughout the whole thing, it can be implied that Yoosung doesn't know he's in a game while Saeyoung does.

Saeyoung's Route
After finding out about secrets V held away from him, Saeyoung becomes cold to everyone. As he works, he enters a chatroom Yoosung arrives into as well. Yoosung tries to offer help with some of his work several times, but Saeyoung refuses, then acts cold and expresses wishes to leave RFA soon. Yoosung gets confused and upset, asking whether that would mean they’ll never see each other again. Saeyoung confirms that and acts detached, and says it was going to happen anyway. That makes Yoosung angry at him for acting emotionless, as he recalls the Saeyoung he knew. Saeyoung says that it wasn’t his real self, that all his friendships were just temporary, and doesn’t care about Yoosung’s words. Yoosung then tells him that unless Saeyoung erases his memories, he’ll never be able to forget him, and expresses how hurt is by the way Saeyoung is acting.

As MC supports Saeyoung throughout the day, he cheers up a little, and in the afternoon enters a chatroom wanting to talk to Yoosung, regretting how he treated him in earlier. When Yoosung enters a chatroom soon after, Saeyoung apologizes. Yoosung asks whether that means Saeyoung is not leaving, and Saeyoung responds that he would try to make sure it doesn’t happen. Yoosung then tells him that even if he might not understand everything, he wants to try and understand, especially since they have known each for years. Yoosung then forgives Saeyoung. Saeyoung talks about how he wants to be independent from V, be brave and appreciate the current moment he is living. Yoosung supports him in that together with MC, if she is in the chatroom. Saeyoung is surprised at the fact he was the one who ended up supported even though he came there to apologize. After Saeyoung leaves the chatroom, Yoosung talks about how bad he felt earlier that day about the situation, but also that he believed they would make up in the end.

Fanon
Saeyoosung is widely accepted in its fandom, with its rivals mainly only being their respective ships with MC and Yooran. It can also be shipped along with Zumin and Jaehee x MC or along with Zenhee and JuV. Although, some people tend to view their relationship as brotherly because of how Saeyoung teases Yoosung. There is a photo of Yoosung kissing MC from the left while there is a photo of Saeyoung kissing MC from the right, which makes it very easy for fans to edit the two to be kissing each other. There are 322+ works on AO3.

Fandom
FAN FICTION

TUMBLR

Trivia

 * The ship name Hacked Gaming refers to Saeyoung being a hacker and Yoosung gaming a lot.
 * Saeyoung was the one to put the star (★) in Yoosung's RFA Messenger username.

Variations

 * Yoosung x 707 x MC refers to the ship between the two and the Main Character