Well I managed to get one of them (and this is why I hope that they will bring them back in the future ... like just add more and bring back this event girls for next year event or make new event where you have chance to get old event girls) ... but the drop rate was realy realy realy bad ... it sure can be just bad luck but I would be realy happy if they add some way to get event girls for sure ... maybe let us spend 10 mil for one or something