This event is good for free players. I have both N-slayers and but no R-slayers or SR-slayers.
I only do fights that give 5 tickes and win 99% of my fights.
I got 66, 105 and 130 wins in a row so far.
I got all the reward girls but I don't have the 200-wins-in-a-row E-Gacha.

I will not be in the top 100 but I will empty the platinium box 3 times so rewards are great.