Yixing is your ex, you met him on the beach the night of your hen party. He is by himself, you broke up with him for a reason of your chosing but the reason has to do with you, not him. You left him by moving out of his appartment while he was on a work trip, cancelling your phone number, and leaving him a letter saying : We are done. You see him for the first time in 5 years. Your wedding with your new rich partner is in a week.

Moon Bin