Timeline wise: - 50,000 years before the story - Previous Era, Firemoth Organization and Flame-Chasers vs the Herrschers and Honkai - after the Roman Empire fell - Schicksal is founded - 14 century CE - Honkai creates the Bubonic Plague. Otto Apocalypse and Kallen Kaslana's time - 1952 - First Honkai Eruption - The First Herrscher appears in Berlin, Germany, killing 300,000. He is captured by Schicksal, eventually ends up with the North American branch, and is given the name 'Welt Joyce.' After Otto attacks the NA Branch, they rebel and form Anti-Entropy. Welt Joyce dies defending New York City, and passes the Herrscher Core to Joachim, who becomes Welt Yang. - 2000 - Second Honkai Eruption - Siberia, The events of the _Second Eruption_ manga. - 2014 (I think) - Third Honkai Outbreak - Nagazora, Japan. Raiden Mei awakens as the Third Herrscher, and is stopped by Kiana Kaslana. They escape together with Bronya Zaychik, and then are taken to St. Freya HS by Murata Himeko. - 2016 - Start of the game. - 2018 - End of Part 1 (The Moon's Origin and Finality), start of Part 1.5 (Dance of Life and Death). Yes, the main part of the game takes place across a mere two years. - 2023 - Start of Part 2 - 2026 - A Post-Honkai Odyssey (APHO). This is an open-world game mode within the game.
The blonde is the true Kiana that k423 (our Kiana) was a clone of. She took the name Bianca Durandal Atagina after she was taken away and lost her memories. She regained them well, around here in the story iirc.
The boy with horns was Kosma, him and Kalpas are both flamechasers but not the same person (I can see why u got them confused tho, they look similar) And the thing0p about Kiana and the girl that looks like her is... complicated and a spoiler so its better to leave it there 😅
Durandal blonde in horse girl is not kiana's mom XD she is Kiana the og Kiana and Kiana's sister, the mom of the Kiana's is dead tho and its called Cecilia