Colette, a girl who lives quietly with her master in the mountains of a certain country. What she is taught by her master, Priscilla, is not alchemy, but alchemy!? Alchemy is an epoch-making technique for synthesizing items using the semen of living things. But Colette is half a serving who has never had sex yet. Such a collet was able to safely become a full-fledged smelter with a little forcible guidance from Prisila. Prisila gave a gift to Colette, who became a full-fledged person. "My atelier ...!?" Colette, who got her own atelier, will do her best. She was on a quest, and she was hindered by a powerful monster. What appeared in front of the troubled collet was a hero with huge breasts! Alchemy using semen = alchemy How much paradise is it to feel good and make money!?