The dead Herrscher of Corrosion returned to the Tree of Imaginary Numbers, met Mei from another world in the Tree of Imaginary Numbers, and obtained her memories. Her original feelings for Alicia and Mei's feelings from the other world interacted with each other, making her decide to take revenge on Alicia, so she returned to before everything began and started her own revenge.
(I really didn't know what to write in the introduction, so I just wrote a few words to make up the number of words, hehe)
