Ultimate Battle: Hope vs Despair: Junko's Despair Game

Kinkyfique #5 Part 1/3: The Master Mind Junko Enoshima and Ultimate Hope Makoto Naegi face off. However, bored with this trial and incredibly horny, Junko offers a deal, a final game of Hope vs Despair revolving around Kyoko. Both Makoto and Kyoko agree. What does this game involve, and who will end up on top? And who will end up the bottom?