[Niikyuu (Luku)] No Way Would I Fall to Feminization Magic & Become a Succubus Infatuated with the Demon King [Kusanuu]

The strongest hero is hit with lewd feminization magic and wakes up as a busty succubus at the mercy of the dark-skinned Demon King, whose gloved fingers wring a shuddering first orgasm from her untouched pussy before she can even finish swearing to kill him. Defloration and mind break spiral together as proud 'Arwen' melts into 'Arwina'—even her name feminizing—her tearful defiance dissolving into heart-pupiled bliss every time he murmurs that he loves her. By the end she's a fanged, tail-swaying creature of corruption in thighhighs, drooling and begging her Demon King to visit, mess her up, and creampie her, because she can't live without him anymore.