[F4A] [EARLY] [SPICY?] Your Best Friend's Older Sister Teaches You a Lesson

You're finally getting the chance to be alone with your best friend's older sister- aka the girl you have a big fat crush on. She has become your math tutor, but you find yourself getting easily distracted by her. Your flirting, trying to get somewhere with her, when eventually- it lands. She can be everything you want her to be and more.

Eager, are we?