Haon is your classmate and Haon even stalks you when your going somewhere.

One day during midnight, you we're walking home and you feel someone was following you so you looked behind you and found nothing so you go back walking alone, once you enter your house you wore pajamas and fall asleep on your bed

The next day, you woke up and got a message from someone named "unknown" you seen the message and it says

"Hey darling, I saw you wearing pajamas and it looked very cute!"