Sylvia is a member of Chaldea Security Organization.

Within the anime adaptation, she is shown working during the Rayshift proceedings.

A seventh Singularity has been discovered in ancient Mesopotamia in the year 2655 B.C. 
 
The land of Uruk, governed by the wise King Gilgamesh after he returned from his quest for immortality, was grand and prosperous until three goddesses and countless Demonic Beasts appeared. These enemies have brought Uruk to the brink of destruction. With a Rayshift—a method of traveling across both time and space—Fujimaru and Mash journey to the land of Uruk, where they encounter the fortress city of Uruk and the Absolute Demonic Front, where a terrible battle against the fearsome onslaught of the Demonic Beasts rages. There, the citizens of Uruk, who live their lives to the fullest despite facing an existential threat, continue to fight for their future. Deities and Demonic Beasts attack with terrifying force, and mankind pushes back with all its might... This is the era where humans and gods are destined to part ways. 
 
Fujimaru and Mash, the pair who have fought through all six previous Singularities, embark on their final battle. 
 
(Source: Aniplex of America) 
 
Note: Based on the Babylonia Singularity of Fate/Grand Order, the Japanese smartphone role-playing game created by Delight Works based on the Fate series by Type-Moon.

[Profile (Hibiki)](https://hibiki-cast.jp/hibiki_f/chiharu/) | [Twitter](https://twitter.com/chiharu_okr) | [Instagram](https://www.instagram.com/chiharu_okr/) 

Chiharu Hokaze is a former member of the digital seiyuu group [22/7](https://anilist.co/staff/151947/). She is currently under Hibiki going by the stage name Chiharu (千春).

The Lost Room.
A place where you can see what was lost, or maybe what will be lost to you in time.
Existing in the innermost part of Chaldea, it is the boundary line between dream and reality where the light of the moon shines through.
Produced by the Chaldea Summoning System, the room holds a small number of worthwhile benefits to enjoy.

After battling their way through all seven Singularities, the Chaldea Security Organization has finally arrived at the endpoint of the Grand Order: The Final Singularity, Grand Temple of Time: Solomon.
 
Now is the time to defeat the root of all evil, Solomon, the King of Mages. Now is the time to reclaim the future.
 
With the final operation looming large, Romani Archaman considers the choices he will soon have to make, Mash Kyrielight dwells on life’s limitations, and Fujimaru prepares to receive a new Mystic Code.
 
All their many encounters have led to this moment as Fujimaru and Mash at last embark on their final operation...
 
[Source: Aniplex USA]

The stage is set on an ocean oilfield base, Seraphix. A hell that tries to imitate the Holy Grail War of the Moon. A pleasure prison that you can never escape from unless you're the last one standing. There's not much time until it reaches the limit and collapses. What lurks within the depths of the "Ego" that desires to dance ---
 
This is the adaptation of the Epic of Remnant Chapter 1.5 from the mobile game, Fate/Grand Order.

Ritsuka Fujimaru is humanity's last Master. Restoring humanity would have been impossible without him. However, even he has a shortcoming: he is honest to a fault! This FGO slapstick anime shows Fujimaru's naive questions throwing the Heroic Spirits into turmoil, and all in the original manga's surreal tone. 
 

(Source: Aniplex of America)

New short comedy manga based on Fate/Grand Order.

Special episode aired during Fate Project's New Years Eve 2022 TV Special to announce the 2023 ONA series.

The manga is an anthology story centering on the Crypters, the betrayer agents of Chaldea that are the center of the Fate/Grand Order smartphone game's "Lostbelt" story line.

Miyamoto Musashi... a strange woman encountered in the minute Singularity. The concept of Pruning Theoretical Phenomenon... and a being who continuously warps from one world to another...
 
Too much remains a mystery about this woman. Historically, Miyamoto Musashi was a man who made his mark on the world as a master swordsman. What reason could there be for these two who share a name to be split as they are?
 
A new story unfolds after Musashi reappears and reunites with everyone at Chaldea. The time has come for the Seven Duels of Swordmasters to begin.
 
Note: This is the adaptation of the Epic of Remnant Chapter 3 from the mobile game, Fate/Grand Order.

The manga focuses on Fujimura and Mash trying out real recipes and dishes from across history.