A story about Sandara Park, 29, working at one of popular company as a stylish. And Kim Myungsoo, 21, a music college student. Though the gap of their age is pretty big, they called each other as a bestfriend. They never realized each other feeling until one day, a promise encircling them. What is the truth behind their promise? Fanfiction Trailer   Foreword           "we are bestfriends, arent we?"" yes we are." I smiled. " Im happy to have you as my bestfriend.."                               He leaned in to press his lips on my forehead, leaving a warm sensation as his lips touched it. I barely found his smile before he pulled me closer into a gentle hug. "Me too."