Perfume ~Saimin Kousui~

College science professor Shichio Imai has perfected a scent with far-reaching effects.
It titillates the senses of a specific partner, evoking a profound deep pleasure.
Made from lady waters and essences and pheromones, it achieves technical brilliance with effortless grace.
He calls it the Breath of Amadeus.

[From DLSite English]