Not long after Raiden Mei becomes the Herrscher of Thunder and left for World Serpent, her precious tuna, Kiana Kaslana, dies due to Honkai Corruption. Kevin Kaslana promised that he will save Kiana's life, but he did not. Raiden Mei was so depressed to the point it drives her insane and starts killing the people around her. She have destroyed the entire World Serpent HQ. Kevin Kaslana is dead, Raven is dead. She is in a killing rampage without a care in the world, until she finds you...