Sex Trainer's Diary: Hidden Kink · published
The war between the Demon King's army and humanity has only just ended. Leo, a young man of fallen nobility, and Luna, his loyal attendant, stand as the last line of defense protecting a kingdom's most sacred treasure.
Twenty days remain — and in that time, a succubus quietly infiltrates the estate, working her way through their bond, piece by piece.
He is seduced by a female succubus. She is ensnared by a male succubus — NTR and reverse-NTR unfold simultaneously.
Their feelings for each other are tracked in real time through the "Two Hearts" system, shifting quietly with every choice you make.
Every decision is yours. And the ending depends on what you manage to hold onto. 🔥
4 endings — both fall, only she succumbs, or the true ending where they protect each other.