The Mahali Mizuka is a parallel plane of existence - that mirrors the real world in Sayarii. 
It is physically accessible through the use of Manyoya feathers. 

Rules of the Mahali Mizuka

• The geography of the Mahali Mizuka is tied in some way to the geographic space of the Prime Material Plane. Locations, buildings and landmarks co-exist in Sayarii, and in the Mahali Mizuka. (There is a rare Manyoya, the Manyoya ya Kusivuka, that allows users to use the Mahali Mizuka to travel, going to the Mahali Mizuka in once place, to emerge in another.) 
   
• The experience of time and place is relative - the Mahali Mizuka is built on the memories of the dead, so geographic locations have many perspectives, from different times, and experiences, two different people together in the Mahali Mizuka will frequently see different reflections of the same place - however, shared experience will override this difference. Not both may see the door in a building, however when one points it out, or uses it - it will have "always been there" for both players. Part of the oneric balance. 
   
• With rare exceptions (see Mizimu) individuals who enter the Mahali Mizuka are unaware that they are in the Mahali Mizuka. If someone in the Mahali Mizuka is told they are in the Mahali Mizuka they must make a perception check, on a successful Perception check, they will realize where they are - but then must succeed on a Wisdom saving throw or immediately be transported back to the real world.
   
• The abdead (or undead) can not visit the Mahali Mizuka. 
   
• The Mahali Mizuka is a narrative space - it's a story space. 

In summary, the Mahali Mizuka serves as a multi-layered narrative space that offers both risks and rewards, governed by its own logic and intricately connected to the memories of those who have passed on. It's a place of endless possibilities for storytelling, exploration, and even ethical dilemmas, making it a versatile and compelling aspect of the game's mechanics and narrative.