Highlight's Dongwoon left a handwritten letter to fans before his military enlistment tomorrow on May 9.

Dongwoon's letter is as follows:

"To: Light :D

Hello. This is Son Dongwoon. It's been a while since I've written a handwritten letter. I'm not sure how to start. It's already been 10 years since we've been together, and when you read this letter, our temporary goodbye will have started for sure. Each and every moment was enjoyable, and I was happy. There were countless good things, but it's unfortunate the feelings from those times and the feelings from that atmosphere are slowly fading. When this time passes, I'm sure we'll create new ones. If you spend each day with the memories we've made so far, the day we meet again will come quickly.

Another thing that's regrettable is for the time being, I won't be able to comfort you all, who've laughed, cried, and felt comforted after watching us and listening to our music, with new things. When I return, I'll comfort you a lot more. There's still a lot of time left, but I'm laughing as I imagine joking by saying, 'Back in my day' and 'I heard the military is easier now' in front of everyone. Up until now, I was grateful and still grateful now that you were with me whether the wind blew or the warm sun was shining. I'll continue to be thankful. Take care, and I'll see you soon.

When you feel tired, look at the sky. It'll always be there!

From everyone's maknae, Son Dongwoon."

Dongwoon will be serving as a conscripted police officer following his basic training. He's the final Highlight member to enlist for his mandatory military service.

In other news, Dongwoon released his self-composed solo song "In the Silence" last month.