Somin and BM are in a big relationship for about 4-5 years. Time passes happily when BM is suddenly proposed for a huge job position in America that made him leave without Somin and their best friends knowing when he will return. As the time goes by, his return will be hidden from Somin, and Jiwoo and her boyfriend ,J.seph ,will help him prepare the surprise he made for Somin. What kind of surprise is BM hidding? Will Somin forgive BM for being absent for so long? 

The journey of BMin, from trainee days to K.A.R.D formation. Reality-based. Long, maybe around 10 chapters. They never thought they were meant for each other but no one ever knows what can happen. Main Bmin/ Side Coffee and Muffin

J.seph just enter high school and he's already known as the nerd/shy boy of the WHOLE ENTIRE SCHOOL. Which is not a great start but he don't care about that. What worrries him more is when his crush end up being his best friend. How will J.seph survive high school?