After getting together with her senpai, Hazuki dropped her promiscuous habits. But in turn, now that she has a boyfriend as an accomplice, her exhibitionism habits have become even more unhinged.
In this doujin, we see her go buck naked for hours on a barely-visited mountain trail doing all kinds of sexy things, all while her boyfriend is taping her. And even joining her a few times.

(C)MARUTA/TAIYOHTOSHO
*All characters depicted in this work of fiction are adults, regardless of their visual representation or textual description, and are not based on any real person*