H04854 Renseijutsushi Colette no H na Sakusei Monogatari Episode 4: Priscilla's Last Lesson

Priscilla, an alchemist living in the mountains, uses men's sperm in her special formulas and leads a lazy life with her student Colette. When a stranger appears, Priscilla decides to leave, but first she gives Colette a final lesson on collecting sperm. Colette has doubts even though she is skilled at potions. The episode runs 17 minutes.