The duo members, Brian and Hwanhee, thanked fans for their continuous�support as they took a snapshot with a large blue and white anniversary cake, commemorating the special occasion.

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H2 Media Entertainment also shared a special video featuring Fly to the Sky's top 5 tracks, allowing fans to go on a nostalgic trip in light of their upcoming concert.

Meanwhile, the duo recently returned with their 2nd mini album 'Your Season'.

Congratulations on 18 years!