Timeline


2006
  • Kyuhyun's predebut: Kyuhyun is practicing his singing alone when Yesung enters the training room and tells Kyuhyun to sing in front of him. 
  • Unknown: Yesung and Kyuhyun share a room in SJ dorms for 1-2 months.
  • May 27: Kyuhyun debuts.
  • Summer: "Yesung Kick Incident" (1-2) : angry about Kyuhyun eating ice-cream alone and not sharing it, Yesung kicks the ice-cream out of Kyuhyun's hands.
  • September 13: They team up against Eunhyuk and Donghae for a game in Japan (last episode of the mini-drama series). 
  • September 19: Kyuhyun calls to congratulate Yesung on his first day hosting his radio "Miracle For You".
  • September 22: Kyuhyun's first appearance in "Miracle For You". He soon becomes a regular guest, appearing a total of 19 times from September 2006 to April 2007.
  • November 5: KRY debuts.

2007
  • March: KRY goes to Thailand. That's where the "water please" incident happens : Yesung asks for water in english on stage, but the first notes of "The One I Love" start playing the moment he goes to grab the bottle. Kyuhyun still loves to talk about that story and imitate Yesung's english.
  • April 19: Kyuhyun's car accident. Yesung records a message for him, Leeteuk, Shindong and Eunhyuk in Miracle For You, then posts it on his cyworld. He promises he'll never get angry if Kyuhyun makes fun of him in the future.

2008
  • January 4: Kyuhyun assures Yesung and him are close when asked if they're rivals. Yesung then says Kyuhyun's teasing is cute because he's younger (Park Jung Ah's Scintillation Night).
  • February 22: Super Show 1 starts. Yesung and Kyuhyun hug in every performance of "The Night Chicago Died".

2009

2010
  • May 13: The 4th album, which features their duet "Your Eyes", is released.
  • August 1: KRY's "The 1st Concert" starts (ends on October 4, 2011).
  • August 4: They guest with Shindong in "Shin's PD broadcast" and are in the same team.
  • September 11 (filmed in August): Kyuhyun was the first to call Yesung at midnight for his birthday, and Yesung says that Kyuhyun is the first to be by his side when he feels tired. Kyuhyun was also in charge of the lyrics for the birthday song he sang with Ryeowook (The Muzit).
  • December 8: They host the first episode of "SJ Foresight" with Leeteuk and Eunhyuk.
  • December 14: Kyuhyun covers Yesung's "It Has To Be You".

2011
  • February 23: They play "Snow White and the seven dwarfs" with Eunhyuk in "SJ Foresight".
  • April 8: Kyuhyun gets in another car accident, a minor one this time, on his way to film KRY's MV "FLY".
  • May 11: Eunhyuk and Kyuhyun call "Kiss The Radio" while they're in Taiwan for SJ-M promotions.
  • June 1: Yesung and Leeteuk talk about Kyuhyun helping Yesung get rid of his habit of biting his nails (Kiss The Radio).
  • June 13: Kyuhyun calls "Kiss The Radio" again.
  • August 19: Yesung sings a duet version of "It Has To Be You" with Kyuhyun (Ok Juhyun's Music Station Radio).
  • August 21: They appear in "1000 Song Challenge" with Shindong.
  • August 25: Yesung says he can't hate Kyuhyun even if he makes fun of him because Kyuhyun is cute. Kyuhyun says that's because he's the "beloved maknae" (Beatles Code).
  • November 29: First selca posted on social media (from Yesung's Twitter). 

2012
  • February-May: They chase and playfully hit each other during "DoReMi" (SS4 Taiwan, Singapore, Macau, Bangkok, Paris, Shanghai, Jakarta, Tokyo and Seoul - Encore).
  • November 19: KRY's "Special Winter Concert" Starts (ends on January 24, 2013). Kyuhyun and Yesung sing their duet "Your Eyes" live for the very first time. 
  • December 22: The two of them go to eat expensive beef after a concert in Kobe. 

2013
  • January: Yesung says that when he's in a bad mood, Kyuhyun would stay by his side to comfort him. They had a long talk one night, staying up until the break of down together. Yesung felt like they were friends at that time, without the "hyung-dongsaeng" distance. In that same interview, Kyuhyun again talks about Yesung forgiving his pranks because he's the youngest, so he wants to keep doing it (FRaU interview). 
  • April: Kyuhyun and Yesung are paired up to go visit Busan for "Super Junior's Experience Korea".
  • May 6: Yesung enlists.
  • July 27: Kyuhyun and Ryeowook perform "Gray Paper", Yesung's solo, while Yesung is in the army. It was Kyuhyun's idea, and it was a surprise for Yesung who cried while watching the fancam (SS5 Tokyo).

2014
  • November 13: Yesung is still doing his service when he congratulates Kyuhyun for his solo debut, "At Gwanghwamun".

2015
  • April 1: The two of them meet after a long time for a drink.
  • May 4: Yesung is discharged.
  • June 2: KRY's "Phonograph Tour" starts (ends on January 3, 2016). Yesung admits he wrote songs thinking about Kyuhyun at night.
  • July 15: Kyuhyun complains about Yesung not taking him to go shopping with him when they were in Japan without Ryeowook (Naver Starcast). On the same day in "Radio Star", they talk about the "Yesung Kick Incident". 
  • August 23Yesung complains about Kyuhyun not contacting him for two years but would send him cute messages when he was drunk. Kyuhyun replies they did go for a drink together one month before Yesung's discharge (Phonograph Tour).

2016
  • June 19: Kyuhyun suddenly appears on stage at Yesung's solo concert, "THE AGIT: Sweet Coffee", to sing "Your Eyes" with him.
  • September 1: Kyuhyun appears in a VCR of Yesung's solo concert "Books".
  • October 7: They go to Seoul Olympic Park together to shoot a Lotte Duty Free video alongside Leeteuk.
  • November 29: Yesung goes to Kyuhyun's solo concert "Reminiscence of a Novelist" and appears on stage to give him flowers.

2017
  • April 17: Kyuhyun playfully calls Yesung's upcoming album "Spring Pancake", and it'll become a running gag (Instagram Live).
  • April 18: Kyuhyun features in Yesung's solo album "Spring Falling" to sing the duet "At The Time", one of Yesung's self-composed songs. 
  • April 20: The article "Yesung Shares Hilarious Mixed Feelings On Kyuhyun’s Upcoming Army Enlistment" is posted on Soompi. 
  • May 24: Yesung is a guest on Kyuhyun's last day hosting "Radio Star". 
  • May 25: Kyuhyun enlists.

2018
  • May 20: Yesung and Kyuhyun attend a wedding in Jeju. They're still on the island (we don't know if it's before or after the wedding ceremony) when they go to a "delicious and not expensive" sushi bar together. 

2019
  • May 7: Kyuhyun is discharged.
  • May 20: Yesung's upcoming solo comeback is hinted at in Kyuhyun's "Aewol-ri" MV (the words "Here I am", the title of Yesung's first solo song, appear at 3:37).
  • June 18: Kyuhyun appears in Yesung's "Pink Magic" MV with Donghae.
  • August 10: Yesung guests in Run.wav (ep 8), hosted by Kyuhyun. When asked "What's Kyuhyun to Yesung?", he replies with "a waterdrop, because people can't live without water and you're cute, so I added 'drop' to the water to make it cuter". 
  • December 24: They spend Christmas Eve together. Yesung is sick, but still chooses not to cancel because they planned it in advance, and decides to stay with Kyuhyun for a while. He calls it "Kyuristmas" on Twitter.

2020
  • February: They drink coffee and eat ramen together in Osaka.
  • June (filmed in March): They are paired up in SJ Returns 4's "We live together" and become the "Yesec-Kkuru" couple for the whole episode (the nicknames remain on later episodes too).
  • June 8: KRY's "When We Were Us" promotions starts.
  • June: What fans call the "wwwu (=When We Were Us) fight". Kyuhyun and Yesung have an argument during KRY promotions (the actual reason is unknown): Kyuhyun asks Ryeowook and the staff to leave the waiting room and wait in the hallway while Yesung and him have a talk inside. They stay in the waiting room for an entire hour to resolve their issues and become closer after that.
  • December 9: Kyuhyun picks Yesung as the member he'd like to be with on a deserted island (the other option was Eunhyuk). Kyuhyun explains his choice by saying "it'd be like going on a trip together, Yesung would take great pictures of me" (Weekly Idol).
  • December 12: They talk about the "Yesung Kick Incident" again on Knowing Brothers.

2021
  • January: They team up again in SJ Returns 4.
  • April 21: Kyuhyun picks Yesung as the member he'd like to go to a cafe with ('Coffee' Interview). He explains that even though he himself doesn't like coffee, he'd go with Yesung because Yesung knows a lot about coffee and had been running a coffee shop for a while. Kyuhyun says they did go to a cafe once after a concert abroad and took a lot of pictures together, so it would be great to make these kind of memories with Yesung. 
  • April 25: They're both in the "Shin-Eun-Kyu-Ye" team during "ELF-JAPAN 10th Anniversary - The SUPER Blue Party".