Kurumi Hina's latest release, her fourth, focuses on anal sex. Having no prior anal experience, Hina gradually opens up her anus, transitioning from pain and anxiety to discovering pleasure. During her first time, she nervously lets out soft moans like "fuaa..."—a memorable moment. Later, she undergoes simultaneous stimulation of her pussy, clitoris, and anus, leading to massive urinary incontinence. Ultimately, double penetration awakens her anus completely, marking a bold new boundary in her performance.