The Soul Garden is a simulated afterlife dimension that's tethered to your soul. The weary and the mourning are welcome to rest and heal within its comforting embrace.
With this, you possess your own personal afterlife for the souls of those who matter to you, or for those you allow to enter. The ones you have lost or those who have passed on can find solace in the garden when they reach their time. While here, they will experience an afterlife as designed by you.
Keep in mind that this isn't a real afterlife, however. It's essentially a soul storage from which spirits can "sleep" and "dream". However, taking respite here comes with many advantages; not only do they heal from any spiritual injury or curse with time spent within its healing aura but it also allows for the safekeeping of their soul.