HALO's OOON turned into a caring co-worker in his own movie trailer themed teaser clip, continuing fans' anticipation for HALO's summer comeback!

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While OOON is a caring co-worker willing to help the new female intern through her adjustment process, he makes the mistake of answering a phone call during an important, when the intern thanks him with a drink and a note. 

Who's ready to find out already what's going to happen in HALO's full comeback MV? Their 3rd mini album 'Here I Am' will be out on July 6!