Which Soulslike is underappreciated in your opinion?

I feel like this is a tough question to answer since being underappreciated is quite subjective. For example, I feel like Khazan is underappreciated in the sense that the game is just not as widely known as its contemporaries that shadow it (AI Limit, Lies of P etc.), so it never really had a chance to shine. It's appropriately rated and liked by fans of the game, though.

What's your pick?