Akiho, a female doctor who works as a neurosurgeon at a certain private hospital. Akiho, who is passionate about her work and is trusted by her patients, ends up falling into the trap of her professors and undergoes human experimentation to develop Portio. …” A full-fledged drama in which Akiho Yoshizawa challenges new frontiers! Includes 'white eyes', drool, and crazy screams throughout.The 'portio' in the back of her vagina becomes the switch to break through her limits.