One day, Hirai Momo asked her fellow J-Trinity Members about the thread. It led her to curiousity, if her red thread is attached to Momo, she knows that they will be together. But the problem is, is Momo really serious? Or she's just playing? She knows that Momo can be touchy and clingy to others. She knows that all of the members of TWICE secretly likes Momo. But she knows, she knows that Momo likes her. Ihm Nayeon knows that Hirai Momo loves her.