Yesung Carier (Part 3)

On September 2011, he along with Eunhyuk and Shindong filled in for bandmate Heechul, who enlist for mandatory military service on 1 September, during the performance on Music Bank and Show! Music Core of Kim Jang hoon latest single, "Breakups are So Like Me".

Heechul is featured in the song and starred in the music video, wich was completed the day before he enlisted.

On 1 March 2011, Yesung's did opened an eye wear shop named Y (WHY) STYLE. Beside eye wear, sometimes they also make a limited phone case, key chains, and more. Yesung and the other Super Junior members also promote the eye wear sometimes. It's located in Myeongdong, Exit no.14.

2012 : Comeback with Super Junior and Mouse and Rabbit Coffe

In June 2012, Yesung reunited with his Super Junior band mates for their sixth studio album, Sexy, Free, and Single for released on 4 July. On 24 June Yesung's teaser photo was released showing him partially bare chested with a crown of branches on his head. On nearly that month, they made a new repackage album, SPY.

On 11 November 2012, Yesung and his brother Kim Jong Jin had opened their cafe named "Mouse and Rabbit" after their franchise, "Babtols" and "Handel & Gretel". It's a quite anchient look and a little vintage. 

2013-Present : Super Junior K.R.Y - Promise You

In November 2012, Japan when they held a concert, Super Junior K.R.Y announced that they would be releasing their first single after 6 years debuting. "Promise You" is the name of thir song, which had it's teaser release last November 21, 2012, and it set to be released on 23 January 2013. "Promise You" on 23 January 2013 was released and debuted at number two on the Oricon's daily single chart.

On 13 February 2013, Yesung released new OST "Gray Paper" with a deep, hurt, and broken heart feeling.

Discography

Soundtrack and Single contributions
2006

1. Album Hyena OST track "The Night Chicago Died" and  "The One I Love"
2. Album Snow Flower track "Stop Walking By"
3. Album Billie Jean, Look at Me track "Just You".