The drop rates are pathetic at this point. I started playing this game last year if I'm not mistaken, and it was never this hard. I think that I played more than 1000 fights and I didn't got a single thing from the event. I spent the coins in the fights in hopes that playing the whole event and spending all my coins would at least grant me one or two girls, which would be better than spent 900 to get one. Disappointed tbh, my tip is play the game for free, paying to play is a terrible idea, and only spent coins in epic pachinko.