To dear Yuchun ・・・
Congratulations on the birthday.
Thus, the birthday of Yuchon was able to be celebrated moreover.
What age was this year for Yuchun?
Did you cry a lot?
Or, did you laugh a lot?
I always want you laughingly Yuchun.
There is big power to make everyone happy in the smile of Yuchun.
Do you know how much for the smile and the singing voice of Yuchun to give us power when painful time and it is sad and to exist?
I have gotten a lot of love, dreams, courages, and hope all of TVXQ including Yuchun up to now.
It is this time a turn that we return.
Because all the painful pasts are put out ・・・
As Yuchun is a smile and can exist at any time ・・・
It will become only memories glad and happy memories for you in the future.
Please laugh indefinitely. 
From ilunali to love you more than anyone ・・・
＊書いていてちょっと恥ずかしくなっちゃったので、英語にしちゃいました。。。
翻訳サイトで変換したので、英語が分かる方にはヘンだなぁ・・・
と、思うでしょうけど、そこは目を瞑ってやってください。。