I hope they explain a little more next chapter, about the cards, about the ante, because it's important for the reader to understand what is going on in order to be invested. And these are the two games a person should be most invested in, the last 2 kakerou matches that matter for baku (as far as we know).
About the ante I mean something like, if in round 4 I have 3 air left I can't afford the ante, so do I go to 0 air or do I have to sit there for 15 minutes until my air runs out and I drown, or does my opponents key open up or what.