During her training journey, she catches wind of frequent mischievous pranks in a certain town. Investigating the cause, she crosses paths with Talia, a girl who proclaims herself to be the Demon Lord’s daughter.

Taking a liking to Seris, Talia casts a curse on her, declaring: “Thou art an amusing woman!”

Enraged, Seris unleashes a spell—only for both of them to be astonished as magic of unprecedented power erupts from her hands. Putting on a smug face, Talia explains:
“I cast a curse that slightly alters the flow of thy mana! Seeing as thou wert rather clumsy at mana manipulation! However, there is a side effect!”

The side effect was something utterly unbelievable: both herself and those around her would be overcome with uncontrollable lust. Yet upon hearing this, Seris immediately feels an overwhelming surge of arousal.

Right at that moment, an adventurer happens to pass by. Seeing Seris, he begins breathing heavily in intense heat. Seris is similarly overwhelmed with lust, draining his essence and swallowing his semen. Instantaneously, her burning desire subsides—revealing the shocking truth that her body has now been altered to crave semen to stay sane.

Seris begs Talia to lift the curse, but Talia questions: “Is staying as thou art truly so bad?”
After hesitating, the easily embarrassed Seris still insists on having it dispelled. Talia agrees, but reveals that she left the catalyst needed to break the curse back at her family home—meaning they will have to venture all the way to the Demon Lord’s castle to retrieve it.

“I am not at full strength either, and thou art far too weak as thou art now. ‘Twould be wisest to establish a base in a nearby town and challenge it once we have grown stronger.”

Taking Talia’s advice, Seris spends the last of her savings to lodge at an inn in the nearby bustling town of “Tuberose.” However, Tuberose imposes a steep residency tax exclusively on adventurers. Penniless, Seris must earn money to survive. Thus begins her life taking on jobs around town while adventuring, growing stronger, and researching magic.

Despite facing constant sexual harassment due to her curse, her grand adventure to break the curse begins now――.