I do want to kind of be careful with what I get into with Gleipnir as a good chunk of what it dabbles into with its plot and themes would have major spoilers. But basically, the series explores how those facing personal problems within society would make use of powers granted to them and how making use of these abilities affect those close to them. This is prominently focused on with Claire and Shuichi who each have suffered mentally to varying degrees due to finding themselves caught up in the conflict between "monsters" and the series gradually reveals the horrific degree that these developments have on them both mentally and within their personal lives. The two gradually find themselves having to make life-altering and morally questionable decisions to ensure their safety in the conflict, even having to coming at odds with people close to them at points within the series. Other characters are focused on to show how they view the benefits of having their abilities and what to do with them based on the pressures they face within society or any problems within their personal lives, which help add additional dimension to the "monster" conflict and the mental developments faced by the characters.
As far as what the plot dabbles into with the causes surrounding the "monster" conflict, they are kind of a double-edged sword. The reveal of what is behind the "monster" conflict also relates to past events that shaped Shuichi and Claire's current mental well-being and the current state of the conflict, and shows that the main instigator of the conflict has some rather morally ambiguous motives that aren't completely clear for why he's allowed the conflict to continue unfolding. This helps add an additional layer to the twisted developments that shape how the characters within the series view the world around them and how this leads them to utilize their abilities. On the other hand, some of the revelations revealed concerning said origins do happen at a rather inopportune time as they happen toward the end of the series, which is conveniently left with an unresolved ending as Gleipnir's manga source material is still ongoing as of the time I write this review and still leaves the true motives of said instigator unclear.
While having some issues because of its source material still being ongoing, Gleipnir still made for an engaging supernatural horror/action series that explores the flaws of its characters with how they utilize the abilities of their transformed states as "monsters" and what led them to take on their mindsets with utilizing their abilities, with the origins concerning said conflict adding more layers to how this shaped the mental state of Gleipnir's main characters of Shuichi and Claire. A definite recommendation if you enjoy supernatural action titles that have a psychological direction to them.
