SF9 greeted fans with a special fantasy version of their latest track "O Sole Mio" from their 3rd mini album, 'Knights of the Sun'!

The vertical clip consists of the members looking adorable in a selca-style video format, with special effects like bunny ears, apples, vampire teeth, and colorful hearts. The boys also sing a cappella with their voices laden with aegyo, loading on the fan service. 

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Watch the cute footage below!