Sailor Moon’s Henshin Items:
The Holy Grail
The Holy Grail was the fourth henshin item that Usagi received. It was used in the S season and predominantly the Infinity Arc of Sailor Moon. After Usagi transformed into her standard form of Sailor Moon using the Cosmic Heart Compact, she could upgrade to Super Sailor Moon by using the Holy Grail and saying “Crisis, Make Up!” In the manga, Sailor Moon needed to draw power from all of the other Senshi to even transform using the Grail. In the anime, Sailor Moon could transform on her own. In addition to her having more power in her Super form, the Holy Grail enabled Sailor Moon to have a newer, stronger attack called “Rainbow Moon Heart Ache.”
While using the power of the Grail, Super Sailor Moon could not hold her form for long in the anime, and would often become very fatigued afterwards. Super Sailor Moon didn’t seem to experience these problems in the manga.
In both adaptations, the Holy Grail was described as having infinite and divine power. The Holy Grail could bring about peace or destruction depending if the True Messiah (Super Sailor Moon/Neo-Queen Serenity) or the Messiah of Silence (Mistress 9/Sailor Saturn) used it. The Outer Senshi (Sailor Uranus, Sailor Neptune, and Sailor Pluto) had a mission to find the Grail and keep it out of the Messiah of Silence’s hands.
It was also mentioned in both adaptations that Neo-Queen Serenity had a picture of the Holy Grail in her room. In addition, Chibiusa learned that Neo-Queen Serenity actually had the grail when she was younger.
In the manga, Sailor Moon acquired the Holy Grail when she connected her heart with Tuxedo Mask and Sailor Chibi Moon. In the anime, Sailor Moon acquired the Holy Grail after the three Talismans (The Space Sword, The Deep Aqua Mirror, and The Garnet Orb) all came together.
In the manga, the Grail duplicated itself so that Sailor Chibi Moon could have her own Grail. As such, she could also upgrade into Super Sailor Chibi Moon. After the Outer Senshi parted ways with Sailor Moon and the Inner Senshi, Sailor Moon and Chibi Moon could no longer transform into their Super forms with the Grail. As a result, their compacts were updated so they could continue to fight in their stronger forms. Later on in the story, the Holy Grail upgraded itself into the Holy Moon Calice, and it allowed Usagi to transform into Eternal Sailor Moon.
In the anime, Mistress 9 tricked Sailor Moon into giving her the Grail. Mistress 9 gave the power of the Grail to Pharaoh 90, and the Grail was shattered in the process. However, Sailor Moon was able to transform into Super Sailor Moon without the Grail using her Pure Heart Crystal and the powers of the other Senshi. Otherwise, Sailor Moon was not able to upgrade to her Super form again until her brooch was updated.