HEZ-821 After working night shifts for 10 consecutive days, Jun Mizukawa, a pure and honest nurse, reached her physical and mental limits, succumbed to her sexual desires, and turned into a sex zombie.

My sister is my pride. She was an excellent student and is diligent, clean, and pure—an ideal woman that other women aspire to be. One day she happily accepted a ridiculous shift schedule and before she knew it, she had ten consecutive night shifts! Naturally, her mind and body were exhausted, and her reason began to be consumed by lust… To reward myself for my hard work, drinking alcohol turns into a sex drive switch and all reason is completely swallowed...