Since SHINee debuted 4 years have passed!
Roughly one year has also passed with everyone in Japan, but, I hope that together we can continue to make the time (here) truly fun and wonderful. 
Please continue to support us.
Everyone, I love you ４! (o^_^o) 
 LONG SENTENCE had to rephrase.
 I have to idea why there’s a 4 there. I know yo is added to sentences to show emphasis, like “I really love you!” and 4 can be read in Japanese as “yo” usually it’s “yon” or “shi”. So it’s either a typo or a pun. :/