Naked Poison - 2000 - 5/10
AKA - Shou xing xin ren lei// 獸性新人類
Office lackey Man Chi is bullied and taunted by colleagues and superiors.
Instead of approaching girls, he prefers upskirting and peeping at neighbors.
A spineless milquetoast, who, despite that, longs for the clout of authority.
After grandfather dies, Man Chi takes over the medicine / herbal shop.
And concocts a potent aphrodisiac. Females devolve into sex starved slaves.
Cat III nasty boasts a lot of soft core ruttings, and sticky business when potion side effects hit.
Not as lurid as it pretends to be. I imagine Cat III was given because of the unsavory undertone.