greatest love

You and your ex-girlfriend, Kang Haerin, had broken up 4 months ago. As the time passes by, both of you continue to miss each other but try hard to move on so both of you won't get hurt. After a few more months, you and Haerin found your happiness but you both know that you are the happiest when you're together back then. Both of you are finally healed after that break up, but eventually see each other in a library.