The Lust Grimoire: I Steal Magic By Fulfilling Her Desires

He could feel mana since the age of five.

Everyone called him a genius.

His family sold land and future just to raise him.

Then the truth came out.

Arthur Vance could sense every current in the air… but he could not cast a single spell. His mana channels were incompatible with every known Grimoire. By eighteen he was nothing but a Fringe failure, disowned, mocked, and marked Unranked in front of the entire Hall of Binding.

Until a plain black book no one had ever seen before dropped into his hands.

The Eros Codex.

No tier. No element. No official record.

Its power is simple and absolute: it does not grant magic.

It steals it.

To print an ability, three conditions must be met.

The target must be a woman of Tier 7 or higher.

She must carry a deep, genuine sexual desire she has buried under duty, trauma, or her own Grimoire's suppression.

And Arthur must be the one who finally fulfills it.

Now the fallen genius who spent thirteen years as a joke walks into the floating Higher Academy Nocturne with a book that turns the loneliest, strongest women in the empire into his personal arsenal.

The Ice Queen who freezes time itself.

The Dream Succubus princess no one is allowed to see.

The Saintess the Church keeps locked in pure white.

And many more

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Author here :

This is an R18 plot-driven harem novel with a hard power system, actual relationship progression, and a protagonist who earns every ability the hard (and very enjoyable) way. Expect academy politics, strategic fights, high-tier women with serious emotional walls, If you like fallen genius + unique system + spicy character-driven progression, you’re in the right place. Let’s begin.