Defeated Hero’s Sperm Extraction Facility ~Days of Captivity Under the Female Executives~ [v1.0] [Sabori Saboro]

There exists a hero, one who’s the strongest in the world.
But with his lover Yui taken hostage and his transformation sealed away, he surrenders himself to an organization’s underground facility.
What awaited him was a semen-extraction experiment – one in which the female officers squeeze “Hero Energy” out of his semen.
By day, the “collection” is carried out by researchers in white coats. By night, the sweet, inescapable temptations of the female officers have their way with him.
There is only one way to win back his freedom: save up “coins” and buy himself back.