Filmed in 4K HQ, 'Kai' features a new 3D VR filming style where the male voice has disappeared! From a thrilling encounter with his sister Tanaka Nene, the brother struggles with her bold actions as he pushes forward to lose his virginity. However, when things start to spiral out of control, the content takes on an uncomfortable tone. Initially thought to be a fun sister fetish piece, viewers soon find themselves disheartened by the shift in narrative. Nevertheless, the immersive quality and creative male perspective are excellent, earning it a certain level of acclaim as a new type of filming. Although the story’s twists provoke mixed reactions, the stimulating experiences are unforgettable. Overall, there are plenty of scenes showcasing the appeal of favorite actresses, and while opinions are divided, it is an enjoyable and challenging work! Great expectations for the next installment!