Sem and Jun are sorta-kinda-maybe friends now, aren't they? I mean, they help each other out, if only for the sake of the MC, and they act civilized around each other. I don't know if I can stomach a friendship is magic moment between them. The tension makes their scenes more interesting than the usual three amigo deal.
I would like to see more of loose!Jun, it would be fun dragging her into various mischief and seeing her exasperated responses. Shelly can fit that role too, although I imagine her being more bemused by Sem's and the MC's antics.
I would like to learn more about everyone's home life. Little things, stories about siblings and things they used to do. You get a bit of that when talking to your date, but I'd like more, especially between Jun and the MC, since they are from the same nation.
I have this head canon of Jun talking about how they spent their childhood sitting quietly in a corner and maybe embroidering, while the MC was running around climbing trees, followed by relentless teasing.
I feel a bit dull, with everyone asking for grand adventures and me asking for stories about embroidery. I can't help it, I see the most fantastic, original setting and the first thought that comes to my mind is 'I wonder how their plumbing system works'.