I am not realy beliving into that either but hell same happened to jay and i ended up being the same. Farmed Daniela got 11 plat armors 9 Sanosukes and 7 Danielas all at a drop rate of 10% (and i need 0 sanosukes). I then quit instat of farming the 8th after it took me 15 attempts to drop just one and am now using the lauren i wanted to use to SU spica. I then started to farm leeanne and did her map 34 times now i dropped her 2 times. Thats a drop rate of pretty much 6%. This drop rate makes me wanna cry.