Sung Jikyo- just a girl who suffered first from being diagnosed with an unknown heart disease, then from falling in love with a boy who used to be against her just because she was different. Jikyo was different, meaning she had a condition no one knew of. With only one friend by her side, Jungkook, she decided to move and get home-schooled for her final months to avoid bullies. But after a destructive wreck, she was suddenly without her parents.
Jikyo decided to move back to her town after school, in hope that everyone forgot about her disorder. Luckily, she was hardly recognized, until she came across those three boys again, who recruited 4 more boys into their group, including her only friend, Jungkook. Even worse than that, she fell in love with the leader of their crew, Jimin, the same boy who ruined her heart a year ago.
Although Jungkook and Jimin aren't mates, they made a promise to stay together regardless of any complicated obstacles that could come along the way. If they were to meet their mate, they swore to each other they would reject them without hesitation. But one day, under inevitable circumstances, jungkook meets jimins new friend, taehyung: A younger male who just so happens to be his mate. He doesn't reject him, but doesn't accept him either, leaving taehyung in a state of uncertainty. Now, jungkook must decide whether or not he should keep his promise to his boyfriend, or if his predetermined connection to his mate is worth taking a chance on.