When Belldandy starts sneazing, Keiichi goes to a pharmacy to get her medication.  The pharmacist also gives him a video.  When he plays it, a mysterious woman shows up who looks a lot like the pharmacist.  It turns out that she is Urd, Belldandy's older sister, who wants to advance Keiichi and Belldandy's relationship along.  She tries this by tricking him into taking a love potion and sending him to see Belldandy.