Life is great for Akira. Now that his dad has married Yukie, he gets three cute little sisters - Yuki, Nana, and Miu - and moves into a new house with them. With his father out on a business trip, he discovers a mysterious box of magic in his dad's study, when and a goddess of love appears! Now he must get the "love juices" of all three of his sisters, or else... Can Akira do it? Can he get his young sisters' juices without being caught?