THE ULTIMATE MATING PAIR The Kiseichuu Queen offers a stunning bargain: If Retto and Kirara agree to "mate" with one another, and regularly provide the Kiseichuu with H-Energy, she'll call off their invasion. Yet even though the two of them are a natural fit as a couple, they've never managed to actually hook up. Can a little bit of romantic intervention on the part of their friends get them hot and heavy?