P3 was a pretty decent game and I think you're spot on with analysing its themes and its inter character relationship development, both really strong points.

I do disagree with the reference to GoT (I assume you're referring to Valar Morghulis there) as being grim and edgy though because the actual meaning of the phrase and its counter-phrase aren't entirely dissimilar to Memento Mori and actually has some well thought out lore behind it. Although yeah I guess if you don't know ASoIaF all that well and your sole exposure to it is people casually dropping it all over the internet I can see why you'd think that.