[Permission (Aibiki Mabo)] Story about Losing to a Succubus and Made to Wear Small Chastity Belt [TGE7]

A hapless young boy falls prey to two sadistic succubi whose dark-skinned, big-breasted bodies, horns, wings, and fanged grins promise nothing but trouble — they milk him relentlessly, teasing that he'd better keep making semen or he'll die, then lock his pathetic cock in a tiny chastity cage for daring to be weak. Between draining sessions he staggers home through town in a hollow-eyed daze, only to find one of the sisters waiting in his bed, riding his desperate 'heavenly sword thrust' while laughing at how feeble he is. Caught in a harem of cruel onee-san predators, the tearful boy can only beg for a break as orgasm denial, facesitting, and femdom training tighten their grip.