From the back cover:
Mitsuki is trapped by the Lord of the Underworld and is imprisoned within his barrier. She pleads for Izumi to come help her, but the Shinigami is immobilized by his fear of releasing his last memory—the moment before his death—and will not rescue her. Is there anyone who can protect Mitsuki from the Death Master’s scythe?
These final few chapters bring about a very satisfying conclusion to the series. Plot threads, aside from one that wasn’t resolved as clearly as I would’ve liked, are thoroughly wrapped up, a testament to the careful planning of the tale. I particularly liked the last few pages of the final chapter; they’re totally like the ending credits of an anime.
There were plenty of differences from the anime, so I was able to enjoy being surprised by a few more twists in the story, and got sniffly as a result more than once. We also learn the true meaning of the title at last.
I can definitely see myself rereading this title, especially in light of information learned in the final chapters. If, like me, you’re tired of stories that drag on without a hint of real development in sight (Hana-Kimi, I’m talking to you), then I recommend this series without reservation.