Youth Always Loses Moral Integrity!

We are not childhood sweethearts, but we have firm "revolutionary" feelings. We are not brothers and sisters, but we have a constant family relationship; the heroine met a domineering female best friend, a handsome male best friend from BL, and a top boyfriend in the most beautiful years of her life... A life of laughter and giggles; tired and painful studies; we love skipping classes and fooling around... I will decide my youth. (The other female protagonist is a otaku, loves anime, and is an amateur rotten girl... Hehe)