Sylvia, a very ordinary girl living alone deep in the mountains. Guided by a man named Steve who came to visit her, she arrived in the frontier city of Elanberg. And before she knew it, Sylvia was pushed down by Steve.

"Why? I should hate this..."

Before she could even wallow in her terrible first experience, Sylvia felt power surging from her body. She possessed a talent for alchemy that even she didn't know about. Sylvia, awakened to alchemy by semen, is entrusted with the development of the town using that power. And so, Sylvia begins to collect semen for the sake of alchemy and the development of the town.

The blood of defloration flows, and the rookie big-breasted alchemist Sylvia is born! Huh, the semen taken into her body is the source of her alchemical power? In order to develop the frontier city... with how many men will she have to... ugh....