Rick, a member of the adventurer circle full of spear users known as “Yari-Sa,” awakens a perverted skill called [Lust], which boosts his combat abilities whenever he engages in something lewd. Thanks to his newfound power, he suddenly becomes wildly popular with women— to the point where the circle is thrown into chaos and is on the brink of collapse. As a result, the leader kicks Rick out of the group! Now begins Rick’s solo adventurer life... full of battles, freedom, and perhaps more unexpected encounters!?