[Lefthand] Dungeon de Ayashii Kenkyuusha ni Ayashii Mahou ni Kakerarechau Boukensha-chan

A female adventurer's dungeon crawl goes sideways when she stumbles into a hidden laboratory, where a hooded, bespectacled researcher declares her the perfect test subject for his experimental female humiliation magicks. His subjugation spell strips away her armor and composure alike, leaving the busty swordswoman sweating and squirming beneath a glowing sigil as every lick and thrust hurls her into violent, squirting orgasms she can't suppress. Delighted by his excellent results, the mad scientist claims her as a high-quality specimen for all the experiments still to come.