1 || Best Friends

F/N L/N and Nishinoya Yuu have best friends since middle school. Y/N's crush started the moment she met him. Now, in their second year of high school, Noya confesses his love to...... Y/N's sister?!?! Not knowing Y/N's feelings for the libero, Y/N's sister becomes Noya's girlfriend. But will their relationship last throughout high school? Or will Noya realize he's fallen for the wrong L/N?

ps - This is my first fanfic so I apologize if any of the characters seem ooc(out of character)

Disclaimer: I do NOT own any characters of Haikyu