"I want the key to your heart."

(Y/N) has known Kageyama Tobio for almost her entire life, because they've been next door neighbors and best friends since elementary school. Now that they've started high school, things have started to change... Could (Y/N) like this Tsundere volleyball player? I DO NOT OWN THE HAIKYUU FRANCHISE OR THE CHARACTERS IN THIS STORY

May contain Lemons or semi-mature content at some point. Also posted on my Quotev.