Sirin was a human originating from Russia who turned into a powerful Herrscher, after Welt Joyce and Yang. She was the second Herrscher to be released to the world and controlled the power of the void.

A Manhua of the popular smartphone game Honkai 3rd launched by miHoYo 
 
「Collapse」 ... An unknown force once known bury the civilization of mankinds in the distant past ... now descended into this peaceful world once again.
 
"Honkai, the mysterious power responsible for destroying human civilization countless times, has descended upon this beautiful world once again…” With the lands now flooded with deadwalkers and Honkai beasts, a group of girls bearing the burdens of despair continue their fight onward. Will there be any hope of clinging to survival?"
 
Three years ago, the third Honkai descended upon Chuangai City in the far east... Under the glow of sunset, Valkyrie Kiana leapt out from the Hyperion, plummeting through the clouds like a falling meteor towards a warship. Her relentless Valkyrie determination represented a glimmer of hope. With this breathtaking scene, the story of the Captain and the Hyperion begins and the stage is set for the battle with the Honkai. Fight for all that is beautiful in this world!

February 2000: Every personnel of Babylon Labs vanished within a single night. Overseer Otto of Schicksal dispatched a special task force to investigate the incident. No one realized that this mysterious event would quickly escalate to global proportions.
 
(Source: Honkai Impact 3rd)

In a certain world bubble, the conflict between the armed dolls and the dead soldiers is never ending. With the conflict between the two escalating, the stability of the world bubble is gradually decreasing. To save the world from collapse, humans set up a special organization to manage and control the dolls. In order to cover up the ugly truth, human specially gave the organization a harmless name: "Renou Xueyuan" - "Doll School".
 
—Just kidding! That can't be true! Did you fall for it?
 
(Source: Benghuai 3 Weibo, translated)

__[Weibo](https://www.weibo.com/u/2835545532) | [Bilibili](https://space.bilibili.com/6543287/)__