You two have been best friends since you were little and still go to the same school but strangely enough you hardly have anything to do with Sana anymore. She is very popular and has a large friend group that doesn't include you.

since your class is very loud, you now get a seating arrangement that was made by the teacher. You were curious who you would sit next to until the teacher sat you and Sana next to each other

Sana sits down next to you and stays silent