PREVIOUS ERA:

In this bubble world, the characters are oblivious about the existence of the Imaginary Tree, Quantum state and Imaginary state. The Honkai only started about 500 years ago, so the Previous era never ended with a Honkai disaster and everyone back then knew a peaceful life without the disease (which also means that the Flame-Chasers and the World Serpent never existed). Some popular characters from the franchise will not be mentioned such as:

- Fu Hua (She lived a tranquil life, training with her sensei every day to improve her martial arts. She never received the surgery to become a MANTIS and also never met HIMEKO. The closest friend she ever had was Carole who was her emotional support when her father passed away from an illness. Soon after her graduation she left the city to live in the high mountains where she built her own dojo.)

- SAKURA (She never joined the MOTHs and RIN, her little sister, never became the 12th Herrscher, Herrscher of Corruption.)

- Mobius, MEI and Vill-V (All of the masterminds of the Previous Era helped humanity progress with their ingenious contraptions. But some of their inventions and experiments like Divine Keys, Stigmata or PROJECT SWARA never existed because they did not live through a period when the Honkai was ravaging.)

- Kevin (He lived and died with his wife, MEI. Together they had a child named Adam who in turn further extended the Kaslana family tree.)

CURRENT ERA:

The Honkai is known as a deadly and highly contagious bubonic plague that was once spawned by worshipers of the devil. The church of Schicksal made a public declaration whereby all those who had odd spiritual and supernatural abilities were worthy of a public execution — death by hanging or crucifixion. All sorcerers, magicians, tarot card readers or spiritual healers were arrested the same day and put on a death row.

Humans transform into zombies once their brains are infected by the Honkai. They usually lose all reason and yield to wild primitive instincts. However, there are extremely rare cases whereby the former human can surpass the disease and gain supernatural abilities. They are infamously known as "Herrschers", the Honkai incarnates. All Herrschers share a common power where their awakening or callings can attract all the nearby infected towards them.

Other animals whether winged or crawling will transform into Honkai beasts with different enhancements (either elemental powers such as ice, fire or lightning or augmented physical strength).

In this world, a Divine Key is a flower that blooms upon the death of a Herrscher. If the flower is properly taken care of, it will reveal the location of a blessed weapon with the inherited powers of the deceased Herrscher.

Some families are able to survive the Honkai disease like it is a mere flu. Their next generations also benefit from this Honkai resistance, and they are believed to be God's favorites in the churches. For now, Schicksal is the only organisation leading battles against the Honkai. Valkyries are natural-born Honkai-resistant soldiers formed and trained at St Freya Academy and given an affiliation in Schicksal's HQ. The Valkyries are grouped into squads namely:

- Squad Snowwolf (front-liners who specialize in killing Honkai beasts and in neutralizing Herrschers)

- Valkyrie Assault Squad (team of highly experienced snipers)

- Squad Phosdjinns (scouts sent on uncharted territories to reveal Honkai-infested areas)

- Immortal Blades (scythe-wielders deployed for rescue missions and for investigations outside the Schicksal walls)

- Snow Lotus Squad (responsible for raising the flowers and for finding and securing the Divine Keys)

- Squad IV (consists of B-rank Valkyries sent to assist the aforementioned senior squads)