I feel like the author is trying to do some roundabout 4d incest/not incest type story here cause all the fun and games stop the sec erika calls Nagi Onii-Chan
@kneesoxx exactly what I was thinking. Considering how yamada-kun went that’s the kind of crazy connections hidden within the onion layers of this unfolding plot. 😀
After reading the authors first work, Yamada-kun, nothing they do would surprise me either. It's like Nagi is the stand in for all the readers at this point.