The stars of K.Will's past MVs including�IU, MBLAQ's Thunder, Boyfriend's Minwoo, SISTAR's Soyu, and Ji Chang Wook�showed their support for�K.Will's upcoming comeback in Part.1 of the 'fake documentary' titled 'The Casting'!

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IU ("My Heart Beating"), Minwoo ("My Heart Beating" and "Can't Open Up My Lips"), Ji Chang Wook ("I Need You"), Thunder ("Gift"), and Soyu ("Day 1") cheered on K.Will's comeback with their wish for "Day 1" to be daebak on music charts. Most of them shared that although they haven't gotten close to K.Will yet, they are fans of the talented singer. IU also revealed that she has a give-and-take relationship with K.Will and jokingly asked him to pay her back for her good word of mouth about him.

Check out the 'fake documentary' as well as the comeback special teaser, and stay tuned for the release of K.Will's fifth mini album 'ONE FINE DAY' on June 26!