(Since I've already given a summary on my last card about season 1)
Season 2 focuses more on Mashiro and Tagaki handling their weekly manga, living up to their new editor's expectations and beating their rivals in the charts.
As Mashiro and Takagi finally get a weekly manga they fall for the stress that comes with it. Working 24/7, nights without rest and the stress of coming up something new every week...which Mashiro gets hit the hardest with.
Just as they get a new Manga, they also get a new editor...a new editor with new ideas set for them, which begins to interfere with their morals as a team and desires.
As there manga progresses, Mashiro and Tagaki become obsessed with ranking high in charts that it takes them down to the wrong path, that manga becomes more important to Mashiro then his love for Azuki.