Honestly, this chapter is terrific at making the reader realize that, 'Oh Shit, the Genjin are not humans.' subtly. The manga is slowly making us realize that Romance will never be an option between these two, or will be quite stretched out if it were. Genjins, as a species, are so fundamentally different from humans that coming to terms with loving them, as a partner, and while being a human, requires a very different mentality or a high mental barrier to cross. It seems that the MC is starting to realize it as well.