Too many Waifus to choose from haha but quite happy with Mikoto she is one of my most wanted blacks on Nutakus Aigis, though I am feeling the sting of my low level with this current event 'The White Emperor' is it? Can't seem to get past the 3 map. Do note my highest lvl is 30 and only 3 units are at that lvl (Being Iris, Katie and Mikoto) so it is pretty obvious I would struggle.
DMM seems the land of opportunity compared to Nutakus Aigis so I have no doubts Mikoto will not be my last black Gatcha unit