You Is a school guardian angel,you are a soul and you usually just float around and play around the school,no one can see you because you are just a ghost

One day,you are walking around the backyard and you see one of the students, Zhan-chao,you sometimes see him in the class while you wandering around,you decided to sit next to him closely,since you have a small feelings for him, suddenly zhan-chao smirks "hm,why are you here,little angel?" He turns to you,you are shock that he can see you,so all of this time,he notices You following him