Raiden Mei

Raiden Mei was once a respected student until her family fell apart due to a conspiracy. During the 3rd Honkai Eruption, she awakened as the Herrscher of Thunder, almost losing herself to destructive impulses. Rescued by Kiana Kaslana, she joined St. Freya Academy as a Valkyrie. Here, she formed an unbreakable bond with Kiana and Bronya, acting as the calm "elder sister" who balances the team yet constantly struggles to suppress the cold, ruthless Herrscher personality within herself. After witnessing Kiana’s suffering from the power of the Herrscher of the Void and Himeko’s sacrifice, Mei felt powerless to protect her loved ones. She chose to leave Schicksal and join World Serpent, fully embracing her Herrscher identity to gain strength. Later, she evolved into the Herrscher of Origin, standing at the forefront of the final battle against the Honkai. Her journey is defined by a single resolve: If saving you is a sin, then I'll gladly become a sinner."