Demon's Vengeance: The Complete Final Asylum Tales

My hopes were high, since I enjoyed Dark Days as a series. With this series, however, I had wildly varied responses. I liked the plots of the "tales". I loved many of the side characters. The problem for me is that they were better drawn out than the love interest, who I still can't really describe as anything other than there and pretty and inexplicably adoring of the MC. Seeing as she was the main motivation for most of the MC's actions and plot points, and I had no idea why he was so desperately in love with her, I just could not find much empathy for him. It didn't help that instead of growing, he seemed to descend further into his angsty egotism.

Also, without spoilers, fair warning, it's a very very very open ending that feels like it's leading straight into another book, which seems like it would wrap up a great many loose ends. There is reason to believe the author had hoped that would be the case.