If you're looking for manga similar to Honkai Impact 3rd: Alien Space, you might like these titles.
A secretive group known as Anti-Entropy made plans to abduct someone from the campus of St. Freya High. Will the Valkyrie trainees protect their friend against this insidious invader?
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.
After defeating a pseudo-Herrscher, an exhausted Theresa was rendered unconscious by a mysterious stigma on her back. Kiana, Mei, and Bronya attempted to revive the principal while the latter found herself entwined with a ravishing beauty.
In the Year of our Lord 1470, Schicksal rallied the princes of Europe and unleashed a Crusade to conquer the Far East, only to be defeated by an immortal warrior. Kallen Kaslana, a powerful Valkyrie warrior, must make a choice between love and her oath.
For years, the one within the 2nd Key observed other worlds of the great tree. He witnessed countless civilizations prosper before wilting away, and still he continues his search for the path of humanity's victory over the Honkai. His watch ended when the chosen one entered his world…
Serpent cults have thrived throughout history yet their origins have been long lost to the passage of time. The revelations of this day shall prove that the myths are real. The Serpent has returned and he shall cast the world into a maelstrom of chaos.
For years, the Celestial Empyrean defended the lands against Honkai hordes but she always refused to join the Springfest celebrations. Can her little companion find a way to return warmth to her heart?
The Celestial Phoenix of Mount Taixuan and her first disciple Lin Zhaoyu went on a quest to stop Yan Shiluo, a leader of a fire cult, and his Rite of Holy Flames. Any form of corruption must be purged.
Anti-Entropy struck Schicksal again by acquiring an item of interest from a defector. While the girls celebrated Major Himeko's recovery from her Honkai condition, class monitor Fu Hua received a special mission assignment from the Overseer himself.