Treasures of the Infinite City

Divine Grade, Sword-Type Treasure "The Only Choice"
  A divine grade treasure in the shape of a katana, said to have been made by the Infinite Goddess in the early days of the Infinite City. It possesses one function: to select from the tree of possibilities a single future and cut away all others, rendering them unreachable. Once you have made your choice, you can only follow the path laid out for you.

Divine-Grade, Staff-Type Treasure "The Right Answer"
  A divine grade treasure in the shape of a Buddhist staff, said to have been made by the Infinite Goddess in the early days of the Infinite City. It possesses one function: to select all branches of the tree of possibilities and lock them away, preventing their access. There is no right answer, so the answer you find must be the right one.