The Unbroken Promise {A Magi Fanfiction}

A magician whose powers are close to that of a Magi, and a Dungeon Capturer with a Napoleon complex and serious anger issues. What could possibly go wrong?
Mikha and Rashil are sisters. Exceptionally close sisters.
They have exponential amounts of magoi which they can transfer to and from each other. In other words, they share each other's life force.
Let's just say, the Magi universe is certainly not the same with them in it.