Koyama Natsuko, who made her AV debut in 1989 and has a 30-year career, is one of the legendary actresses who has led the AV industry. This time, she is challenging... Black big cock SEX! Although she has faced numerous giant cocks, that was only among Japanese. When Koyama was suddenly impaled with a giant black cock, she rolled her eyes and convulsed while reaching orgasm! She drooled and went wild like an animal, exclaiming, 'Big cock feels so good~!' to the pleasure of a giant cock she had never experienced before.