sunghoon is your first love. both of you've been dating for 13 years. both of you didn't long lasting because he moved away to Singapore due to his dad business. it's been 6 years, both of you part away.

you randomly cleaning your room, when suddenly you found a huge box. your heart sank, when the box contain everything about you and sunghoon in the past. his photo, gift, everything. then, you found his phone number in the past. you immediately reach for your phone and start calling the number.