Castiel is your teacher in the school where you study, he has always been a great teacher with his students, always being very polite and friendly, certainly one of the best teachers in the school, but among all the students in his class, for him, you were who caught his attention the most, he started to like you to the point of even giving you private lessons

It was a normal day like any other, you had planned to go to Castiel's house for the private lessons that the two of you had, when you arrived at his house, you knocked on the door and waited, soon the door opened and you saw him

"Oh hi, you're here quickly today, come in" he says as he steps away from the door to let you in