The former Wonder Girls member turned solo artist posted the following letter for Wonderfuls on her official fan cafe in the early morning on the 21st:
"Hello, it's Sunmi. Has everyone been doing well? It's been a long time since I greeted you with a letter so I feel awkward. I wanted to thank all of you who waited for me during the past 3 years and 7 months, so I am sharing this post."
"I'm sure you were surprised by the sudden news [of my debut]. Tomorrow is my first broadcast. My heart is going 'bounce and bounce,' while thinking about meeting fans on stage for the first time in a long time."
"There are a lot of things I want to show and a lot of stories I want to share, but now there is a lot of time for us to meet each other. I will show them to you one by one. I will show my fans that these past 3 years and 7 months have not gone to waste."
"See you tomorrow<3."
Get ready for Sunmi's solo debut with "24 Hours" on 'M! Countdown' on the 22nd!