The Senshi are fighting a demon way more powerful than before, in fact it killed Ami and Rei. Ranma picks up Ryoga’s head, they had been fighting the demons as well. Ranma is devastated at the loss, and trains to defeat the demons. Next he loses Ukyo, and the Senshi offers him a chance to be one of them. After his mother got attacked, he agreed and merged with the star seed of Sailor Mercury. Saotome Kaiba is borne, a mixture of both personalities. Kaiba struggles with who she is, while going on a date with Akane. She has to confront both her mothers, telling the truth. Kaiba goes on another date with Akane but is devastated when they have an argument so she runs away and collapses with grief outside a shrine. When Akane finds her a monster attacks so she hides in the shrine were she merges with Rei’s star seed. Mercury and Mars are back and kicking butt. (Sailor Moon Crossover.)