・The rules for "Ihen Mahjong" have been revised. ・The conditions for progression have been clarified. ・The progression conditions are now always displayed. ・No.16: The behavior of the hand during cutscenes has been changed. ・No.18, 19, 20: The round now progresses when the conditions for progression are met. ・Fixed a bug where selecting a different "Ihen" from the dictionary could cause the selected "Ihen" to fail.