While explaining that Mistress 9 is not Saturn, the Outer Guardians remain adamant that killing Hotaru is the only way to retrieve Chibiusa's soul as the girl's body is kept alive by Mamoru. Usagi and her leave for Mugen Academy, where Mistress 9 assumes her role as Pharaoh 90's right hand while ordering Kaolinite to deal with the Sailor Guardians. When Usagi and her friends storm Mugen Academy, they are attacked by the Witches 5 whom Kaolinite revived to enact their revenge. But the Witches 5 end up destroyed by the Outer Guardians, who come to their aid while admitting wanting to protect Usagi. The fully united Sailor Guardians then confront Kaolinite, who assumes her Daimon form before being destroyed by Usagi. Meanwhile, Hotaru's spirit inside Mistress 9 watches powerless as she swallows Chibiusa's Legendary Silver Crystal.