A sex-obsessed man is summoned to a fantasy world as a legendary Hero tasked with defeating the Demon King. He soon discovers that his unique power allows him to awaken the latent abilities of women through sexual intimacy. After sharing passionate encounters with a swordswoman, a priestess, and an elf, the Hero decides to fully embrace his new life of pleasure and power in this parallel paradise.
While resting in the village of Füss before their journey to the capital, Naoki spends his free time bonding intimately with his party members: Tianne, Llusse, and Filia. Through a series of lustful encounters and a visit to a local bathhouse, Naoki utilizes his unique power to satisfy the women and strengthen their abilities, all while anticipating the arrival of a new companion.
Naoki begins his journey toward the capital to meet the Queen, accompanied by his party and a new maidservant named Mila. While the group fends off monsters along the road, Naoki continues to share his power-boosting essence with his companions. Despite her initial professionalism, Mila is soon overwhelmed by the aphrodisiac scent of the Hero's power, leading her to succumb to her desires and join his growing harem.
Naoki continues his journey with his growing harem, utilizing his unique ability to enhance the women's combat strength through sexual encounters. After easily dispatching a group of monsters, the party faces a more formidable boss ogre, requiring another round of "power-ups" to ensure their survival. Having successfully navigated the dangerous forest, Naoki and his companions finally arrive at the royal capital of Lesbule.