WHO ARE THEY ?
You've probably heard of Super Junior and two of their three best vocalists : Kim Jongwoon aka Yesung, and Cho Kyuhyun. I mean, if you're here, it's probably because you do know them.
They met in early 2006 –even before Kyuhyun's debut, in a training room– and have been friends for 15 years now, despite the four-year gap (Yesung has said lots of times that it doesn't feel like Kyuhyun is younger than him). It may seem like they're rivals, both being amazing singers in the group, but they're really close and have always been supporting each other. Their friendship includes lots of teasing and joking, and that's what make the pair really fun to watch ! They playfully attack each other all the time –Kyuhyun in particular– but they also like to give the best compliments and be there for each other when needed.
They are the only Super Junior members who have two recorded duets together : "Your Eyes" (2010) and "At The Time", one of Yesung's self-composed songs (2017).
MORE INFO
Yesung
Name: Kim Jongwoon
Date of birth: August 24, 1984.
Blood type : AB
Debut in Super Junior: November 6, 2005.
Sub-unit: Super Junior KRY, Super Junior H
Solo debut: April 19, 2016 (with Here I am).
Military Service: May 6, 2013 - May 4, 2015.
Nickname (from SJ Returns 4): Yesec
Kyuhyun
Name: Cho Kyuhyun
Date of birth: February 3, 1988.
Blood type : A
Debuts in Super Junior: May 27, 2006.
Sub-unit: Super Junior KRY, Super Junior M
Solo debut: November 13, 2014 (with At Gwanghwamun).
Military Service: May 25, 2017 - May 7, 2019.
Nickname (from SJ Returns 4): Kkuru
ACTIVITIES TOGETHER
Their activities with the whole group aside, they've always spent a lot of time with fellow member Ryeowook for KRY promotions : concerts, interviews, MV filming, variety shows... the list goes on.
Back in 2006, Yesung hosted a radio show, Miracle For You, and Kyuhyun was a regular guest. The two of them also teamed up against Eunhyuk and Donghae for a game in Japan, and where called "YeKyu" for the very first time.
During Bonamana and Mr Simple eras, Yesung and Kyuhyun guested in shows such as "Shin's PD broadcast" and "1000 Song Challenge", both with Shindong. They also hosted the first episodes of "SJ Foresight" with Leeteuk and Eunhyuk.
In 2011, they sang a duet version of Yesung's solo "It Has To Be You" at "Ok Juhyun's Music Station Radio", then performed their duet "Your Eyes" for the first time in a KRY concert at the end of year 2012.
In 2013, Yesung and Kyuhyun visited Busan together for the travel book "Super Junior's Experience Korea".
They sang "Your Eyes" again when Kyuhyun suddenly appeared on stage at Yesung's solo concert, "THE AGIT: Sweet Coffee", in 2016. Kyuhyun also made an appearance in a VCR of Yesung's concert "Books".
On the same year, they went skateboarding at Seoul Olympic Park to shoot a Lotte Duty Free video, then ate in a restaurant with Leeteuk.
In early 2017, just before his mandatory military service, Kyuhyun featured in Yesung's solo album to sing "At The Time". Yesung then was a special guest on Kyuhyun's last day hosting "Radio Star" on May 24 of the same year. Right after his discharge in 2019, Kyuhyun appeared in Yesung's MV "Pink Magic" with Donghae. To promote his solo song, Yesung was a guest in Kyuhyun's "Run.wav".
They were paired up in SJ Returns 4's "We live together", and became the "Yesec-Kkuru" couple for the whole episode.
FANDOM
The pair has many different names, so I listed them all in case you need them for your researches.
English: KyuSung (규성) / YeKyu (예규)
Korean: 현예 (HyunYe)
Japanese: ギュイェ (GyuYe)
Chinese: 圭云 (KyuWoon)
Other name (mostly used by spanish speakers): YeHyun (예현)
Chinese: 圭云 (KyuWoon)
Other name (mostly used by spanish speakers): YeHyun (예현)
The fandom celebrate "KyuSung Day" on April 13, because Yesung is the 4th member –if we sort them all by age– while Kyuhyun is the 13th member. So 04/13.