Originally Posted by Drip

I'm 100% certain they're pseudo-randoms. Not only that, but it also seems the randomizer is occasionally "slow" with updating its seed (it's a function of the internal clock of the hardware). Ever noticed how often your girls make a beeline on maps with random nodes, especially when they all happen to cross the same nodes very shortly (on the same move) after another? There's your answer.

Or when you draw really well in the gatcha and then really well again if you draw fast enough.... that was why people were drawing normal gatcha to get 4* or 2-3 3* then doing premium gatcha... not sure if it ever worked but I know some people were swearing by it.