Also, for those complaining about how the mahjong game is too easy... well I think I figured out why. The game's draws are not really random. In fact, the game isn't actually what it says it is. The mahjong clone is actually a veneer for the actual gameplay: playing the odds, using what tools you can to gain an edge when the girls fight back. The game uses a rigged RNG where in its default state it will always get you closer to a complete hand but it also ups the odds that discarding a tile will cause a girl to declare "Canary" (Ron) as indicated by the arrows. When the girls do their whole "sexual attack" thing, it adds stacks of weakness, which makes the game more likely to give you bad tiles and increases the odds of getting Ron called on you. Lightning Concentration can be used once per match to override weakness and make you immune, but later in the game you can also trigger a shorter version of it by playing a potential Ron tile and surviving. Honestly, it kinda sucked to figure out because I was on an ego trip for a while, and then I realized I wasn't good at the Mahjong part of the game as much as RNG was in my favor.
Edit: From what I can decipher from the poetry, this is thematically hinted at by your character being a savant at the game, hence everyone is cheating against you.