Even though I'm a student preparing for exams, I can't concentrate on my studies at all. I'm the type who masturbates whenever I have free time... There's no way I can pass the exam like this... My mother, worried about me, fully cooperated and said that I can release my sexual desire with my family whenever I get horny! It's certainly logical. But my morals are collapsing. Even though I think that, it's good news for me, who is dominated by my sexual desire and whose exam studies are stagnating! I challenge the exam with the cooperation of my family! When I get horny, my sisters say "Leave it to me!" and suck on my dick to release my sexual desire! Sometimes I end up in a 3P situation with my sisters who get in the mood... It's true that when I ejaculate, my head clears and my studies progress! But then, I immediately want to do it again and get horny... Maybe this situation is bad?