Starring Kawakita Saika, the latest work 'Into the Unknown Climax World' tells the story of Saika who starts to imagine erotic things that she couldn't think of in her daily life after a month of aphrodisiac administration. As the filming progresses, she becomes unable to think of anything but sex and ecstasy, with plenty of nude scenes and two threesomes, making it a highly practical and quality work. Attention is also drawn to her natural acting and beauty.