There are many ways to see on which chapter you are right now.
First image shows the total numbers of chapters in the game.
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The progress menu shows you how many different scenes/CGs you unlocked in each chapter.
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The story progress menu shows you which scene belongs to which chapter and your progress status (based on unlocked renders).
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I know of the first 3 screens, but am unfamiliar with the 4th. Here are the issues with the screens as presented:
Screen 1: By DL'ing Chapter 13 from here you get all of the available chapters. This tells me nothing about what chapters I've done and what chapters I have yet to do, only that there are 13 chapters available.
Screen 2: I'm familiar with this screen. It tells me where I've been but not where I'm going. Essentially what this screen does is tell you that you HAVE to 100% each chapter in order to figure out if you're going to the next chapter or not. I don't like that. I'm more a "live with your decisions" kind of player.
Screen 3: I'm aware of this screen as well. I'm aware of what story lines I completed and such. This says nothing about chapter.
Screen 4: I'm unfamiliar with this screen. Considering I've clicked most icons available to me, it's clear that it's hidden somewhere in the UI and thus serves absolutely no purpose. It's there, yes, and kudos for it being there; but if it's hidden it does me absolutely no good, especially if it's pretty much needed to know which scenes are in what chapter.
Ultimately, I'm not going to debate whether or not it's good or bad because that is based on preference and I actually enjoyed the VN. I think they'd have been better off using Renpy and having it feel less clunky, but all in all it's a good VN.