When I Summoned a Succubus S*ave, My Sister Is the One That Appeared

Experience a captivating narrative in the Japanese web novel 'When I Summoned a Succubus Slave, My Sister Is the One That Appeared' as it follows the protagonist's discovery of an ancient notebook detailing the summoning of a succubus slave. Unexpectedly, the protagonist's younger sister, Yurika, materializes through the ritual, setting the stage for a compelling story that delves into taboo themes like incest, contracts, and supernatural encounters. With elements of ecchi and adult content, this short story provides a unique blend of intrigue and desire.