I started this manga on a whim, and man am I glad I did.
With stunning art, a beautiful story, enticing characters, and a simple aura of peace that has yet to be trumped, Majo No Shinzou, or Which's Heart, is a tragic, yet ultimately satisfying ride.
If you are looking for a complex plot, or heart racing action, this is not the manga for you. However, if you're looking for a calm, relaxing manga...this might just be what you've always been looking for.
Majo No Shinzou is the story of a girl, Mika who had her heart taken by her sister, quite literally. Left without a heart,
Mika can no longer die. She wanders the land searching for her heart, on a journey to die. This is the story about her, and the people she meets, the people she leaves, and the people she travels with.
It's a relaxing journey, meeting the people Mika encounters, and finding out their story. Every mini-story is like it's own peaceful tale. But that isn't it's only attraction. The main characters are entertaining to watch, and their stories and relationships are nothing short of stunning.
That is, however, not to say that there's no real plot. The overarching narrative is never forgotten. It's mystery draws you closer every few chapters. But, I must say, some aspects about the plot are a bit confusing, and I found myself only completely understanding them upon re-read.
All in all, if you want a nice relaxing show, with a hint of mystery, drama, and tragedy, I cannot recommend Majo no Shinzou enough.