I.F (Infinite Flow), who are BIZNIZ and nuck, have returned with the mini album “Flow Forever” featuring Muzie, Deepflow, Horim, Junggigo, and more. Previous “Bition Boyz”: Hash Swan, ASH ISLAND, Keem Hyo-Eun, and CHANGMO EPTEND writes a “Letter to You” in new single and MV Next