The story has this level of sophistication that is rarely seen in the medium when it comes to aspects of the human condition. It attempts to answer what makes us human: our desires, passions, and values we have. I understand some of the criticism people have of Hnk has to do with how philosophic it tries to be and I can understand why it is a turn-off for some people.
But if you deeply enjoy psychoanalytical character studies then you will deeply enjoy Phos. Phos goes through one of the most heartbreaking and tantalizing character arcs you will see in the entirety of Animanga. But their tragic journey is beautifully and ethereally told. If you can get past the weird premise you will be treated to one of the best characters you will ever witness. For reference, LotL is very similar to something like Code Geass where much of the series's appeal is from its main character. There are still very enjoyable and well-written side characters but they take a back-row seat for Phos's development.
Basically if you love high-concept fantasy and tragic stories, Land of the Lustrous is the perfect manga for you.
