okay, let me break this down for you so that even you can understand it.

the creators wanted to create a game, that everyone can play without having to pay anything.
in order to do that, they make some exclusive stuff, namely the epic pachinko only girls.
to get all of them, you will have to pay for kobans (you can still get some kobans for free by playing the game, but not enough to get all content).
those kobans need to be expensive, because otherwise they have to stop making this game.
do you have to pay for kobans, because otherwise the game is unplayable... no you do not.

so basically you are just attacking the creators of the game, because you cannot get what you want.
so yes, I called you a crybaby.