"Eromanga Sensei" volume 3 by Fushimi Tsukasa. This is the swimsuit episode, essentially.
The author is fully aware of the kind of trope he is setting up, and called it out in the dialogs between Elf and Masamune: "You are going to be writing romantic comedy from now on, right? And you might be writing those 'swimsuit episodes' in the future, no? So you should take this chance to collect data." The characters went on to have typical beach scenes, typical couple flirting scenes, typical bath scenes, typical party games... all in the name of collecting data for future novels. The author is obviously targeting readers who expect particular features, but how it was boldly done was refreshing. It felt like: "here, want a swimsuit episode? You got it. Now let's move on." It's not quite the same trope when authors play meta-games with their readers.
Besides the swimsuit bits, this volume continues its usual pace of character development. This volume is where we learn more about Elf and her family background, about Muramasa's stubborn personality and the horror story behind her bandaged fingers (as seen on the cover), and about a new novel writer who is very much convinced that Masamune is gay. There were also a bit of progress in Sagiri being less of a hermit in the final chapter, including another precious swimsuit scene that reminds readers that this volume is swimsuits through and through. The author is not holding back at all.
Those swimsuit bits, followed by a unnerving cliffhanger to volume 4. I will have to read that right away.
Previous (2015-12-11): TRICK 2015
Next (2016-01-13): "Eromanga Sensei" volume 4 by Fushimi Tsukasa