Well shit, this chapter actually has some meaningful dialog and showcases these isekai kids having actual opinions and thoughts. I especially like the exposition explaining to that kid why you don't just conquer new land at every opportunity, considering you'd be forced to reconstruct and govern it. So I support more chapters like this, maybe we can climb out of this hole a bit. It doesn't mean Sansui will suddenly have a spine, or a soul, or complete his mission properly and bother to raise his own child instead of letting this obtuse noblewoman's maids do it... But it does humanize these other cardboard people a bit. Props to the creators for a more thoughtful chapter.
But wow, it seems like the primary premise people are using to defend this manga is that it has "boring" in the title. Hoooooly shit. An entire nation of boring, poorly explained, weakly interacting characters was excused by one single word in the title. A word that was supposed to refer to the kid's unique skill set being boring instead of flashy (supposedly showcased by his fight with the 2nd isekai kid), not his personality. It was used to excuse so much failure. "It said it's cliched, what did you expect~!" God help you, if your bar is that low.