now I know how to watch this already:
once u reach round 5, always expect the impossible, eg yakuman 10 times etc:P.
I think beside saki, koromo, and that invisible girl, others playstyle/abilities could happen in real life for now.
even that invisible girl is actually kind of true too in real game, sometimes u play for long time and u ignore someone's presence, especially if that guy always throw something useless, it happens more often after u play like 6+ hours mahjong
(but of course not as exagerrated like in this story)