In the library after school, the sun was about to set... There were no other students in sight... A girl in the class was alone, head down, concentrating on a book. She had excellent grades but few friends. To be honest, she was plain, but the boys secretly used her as a hidden beauty to masturbate to. This situation... the perfect timing when we were alone... Before I knew it, I was rubbing her breasts... and... I took out my dick...