One major issue I had with Abyss was the lack of explanation regarding the fantasy elements, particularly the workings of the Abyss itself. The marble with its glowing and color-changing properties seemed like a fascinating plot device, but its mechanics were never adequately explored. This left me feeling unsatisfied and disconnected from the narrative, as I couldn't fully grasp the rules and limitations of this powerful object.
Moreover, the series seemed to lack focus, trying to blend too many genres together without achieving a seamless balance. The transition from crime drama and murder mystery to romance and fantasy felt forced, leaving the overall tone inconsistent and disjointed. I found myself struggling to stay engaged as the story meandered without a clear direction.