Ijô kôbi: Yoromeku shikijôshû

異常交尾　よろめく色情臭

Also known as 闇の牝 すすり舐める, Yami no mesu: Susuri nameru

The vampire sisters, Yuri and Sen, weave a serious yet alluring and erotic world. Yuri is aggressive, seeking men's blood to achieve ecstasy. Conversely, Sen struggles to abandon her feelings for humans and lives in anguish. Sen becomes even more confused after meeting a certain young man. However, her instincts are awakened, and she finally has sex, but her thirst is not satisfied...