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Their fourth single comes with three versions of the song "Hello" as the tracklist indicates, and the cover image seems to indicate a mellow and groovy song to come.

The release will take place on June 5 to coincide their 2nd anniversary since debut, and the fun doesn't stop there as �the boys are also preparing to embark on a European tour in July! They've released a greeting video to say hello to their fans in Europe, so take a look at that below!

Tip: AegyoKitten