Sunmi has released more details on her first comeback of 2018.

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She'll be returning with a new digital single, "Heroine", this January 18 at 6PM KST. Teaser images will begin this January 4 and lead up to an MV teaser and a series of "Scene" teasers throughout the first few weeks of the month. 

What kind of sound do you expect Sunmi to bring this time?