So for me I have been obtaining the boss girls one by one going through each story zone, but as I got to the Magical Forest Leeditt has now takes over 6 months to obtain with no avail. I started battling Silvanus for her back before the end of my 2018 spring semester and I'm talking around march of 2018 and I am still battling him for her to this day. So at this point I'm thinking she might as well be a legendary cause she has take the most attempts so far to try to obtain.