Love Potion (Yaoi) (Yaoi Manga)

In the family of Hanamura, it's been passed on from generation to generation - the ability to lure and woo any man with a mysterious pheromone-like essence called Choukou, the "Scent of a butterfly." This mysterious and powerful ability was meant for the woman of the Hanamuras, but was passed on to Yuzato, the son of the family. He is a professor at a local academy, and thanks to this ability, his life has been nothing but a string of comical events. Just as Yuzato thought this couldn't get any worse, Hasegawa, his student, is now falling for him!