High school is the most beautiful time, especially for young couples. Jeon and Karin became the top popular couple at school because Karin, an idol, dated a cool guy like Jeon,Jeon and Karin always spend time together both outside and inside school... playing in the rain. ran and chased until they seemed very happy Until... Jeon found Karin hugging his ex in front of the school gate.. he felt devastated "what is this?.. why she hug him?.."