This is the last chapter of the Casio Academy "saga". Well, the last so far—Casio say that they *might* make new chapters if there is demand, but I seriously doubt we'll see any new development in this weird anti-counterfeit campaign.
Episode 3 of Casio Academy, a manga by the company Casio, part of their campaign against counterfeit calculators. Yes, it's weird. You have to through a tedious process to access it: Firstly, you have to create an account with Casio. Secondly, you have to *verify* your Casio calculator (and only select newer models can be verified). Thirdly, now you have access to a game, a horrendously boring, dull, and bad game, and you have to rack up 5,000 points with each character (bar the first) to access the ending to their manga chapter. So you'd have to play the game over and over again to get all chapters of the manga.