San and Wooyoung have been lovers for almost a year, The atmosphere between them was almost cold. Recently, they had been quarreling a lot, and this made San distracted.

next morning, Wooyoung woke up and San was already at work. He went to the kitchen and see small envelope on the table , He opened and it was a letter in San's handwriting

’I can’t sleep last night, sorry if I'm a difficult person to deal with. We've been fighting a lot lately, Are you tired of me? , let’s talk soon’