With "Protect the Boss" is coming to an end, JYJ's Jaejoong expressed his gratitude towards the hard-working drama staff. On September 30th, Jaejoong tweeted,�"'Boss' was happy and I am very grateful for Cha Moo Won ^^ Thank you everybody! Staff members, I admire all of you!" Fans commented, "Congrats on your successful drama" "I don't want it to end!" and "You all did very well. Thank you" The popular SBS drama concluded its series on September 29th with a happy ending for Jaejoong's character. Source: Jaejoong's Twitter