The Psycho… books appear to be part of a reverse-harem/dark romance fantasy universe by Mas (Cruel Shifterverse), but specific editions under Psycho Shifters or Psycho Shifters (Original) aren’t individually indexed on Goodreads.
Commonly Noted Series Context:
The Cruel Shifterverse includes shapeshifter characters, gritty world elements, and intense emotional stakes. Reviews and quotes suggest tropes like reverse harem, dark romance, and paranormal fantasy are prominent.