Sailor Galaxia's past is eventually revealed. She once ended the Sailor Wars by sealing Chaos — the source of all malice — within her body. Unable to resist Chaos's influence, she separated her Star Seed from her body, and it took the form of Chibi Chibi. Sailor Galaxia steals the Star Seeds of Princess Kakyuu and all Usagi's companions, resulting in their deaths. This also includes Mamoru who was targeted and killed before he arrived in the United States. Chibi Chibi transforms into the Sword of Sealing and urges Usagi to kill Sailor Galaxia. However, Usagi instead uses the kindness in her own heart to free Sailor Galaxia of Chaos' corruption, effectively resurrecting all of the Sailor Soldiers, Princess Kakyuu, & Mamoru whose Star Seeds were taken. Normalcy is restored, and Mamoru and Usagi share a kiss under a full moon.