My alluring older sister is actually a wanton woman who made me climax again and again during sex! (Xiao Xiang)

Hibiki, a girl who exudes a strong pheromone allure wherever she goes! Returning to her hometown after a long absence, she's even more alluring than before. But unexpectedly, she directs her excess sexual desire towards her younger brother. What kind of lewd acts will this lewd older sister, eyeing her brother's virgin penis, commit!?