A long time ago two preg fairies were born in a distant dimension. The older of the two's name was Katsuu. Katsuu was sarcastic and mischievous and she took most of her pleasure from interfering with other creatures' lives. Her younger sister, Niku, was gentle and shy and wanted to spread feelings of happiness and love. Together they uncovered the secrets of immortality. Now, Katsuu and Niku are going through the dimensions and spreading the miracle of birth. Too bad Katsuu likes yuri and Niku likes yaoi. What happens when they decide to mess with their favorite couples? Lets find out!