​In this thrilling episode, darkness descends on Iga as the alluring vixens face a perilous new danger. Following a steamy encounter, Yatsurugi Shinobu’s close friend, Mashiba Aya, falls victim to a parasitic bug, surrendering to its overwhelming desires. Tragically, the same fate looms over Kage Lena. To save her, they must acquire the elusive antidote hidden within the sacred halls of the Koga Institute. Will they succeed in their quest to rescue Kage Lena and quell their insatiable urges? Brace yourself for an unforgettable journey filled with passion and suspense in this captivating installment of the series.​