>>724035443
It is alluded, you just have to intuit character dynamics.
The popular girl was used to thinking preferential treatment was her birthright, when she's ignored, intimidated and mutilated by things unconcerned with her shallow presumptions she doesn't dwell on whether vanity and vulnerability are things taken for granted and worth reconsidering, she just indulges her worst self because she's never been sat down and taught decency. It's like Shadows in Persona, except she becomes her own.
The poser shit head is similar, he wants to be as cool as the MC, that's why he forced himself into your friend circle and acts like it's a favor for you to know him, but lacking Demifiend's competence and sincerity does him no favors in regards to himself or with others, rather than being humbled he copes harder that everyone just needs to realize how much he doesn't care that they don't care about him, then they'll be sorry! And when he gains a sliver of insight that he wouldn't even be alive without your unconditional help, he just retorts being helpful without thanks is what you should do if you're really so great and his friend (reciprocating this is not up for the date due to his cognitive dissonance).
The teacher's deal is just being an armchair nihilist who grew bored of an uneventful and disappointing world and wanted to punish the mundanes she felt were responsible, until she realized she had no clue how meaningful normalcy was to someone as equally feeble minded like herself. Put on the spot she learns for all her whining she has no idea what an ideal world is. She just genocided everyone for nothing.
Hikawa's mostly a high functioning psychopath. He doesn't really have an arc, it's mostly you realizing his inner nobility was warped by contempt. Mainly he wants shit to make sense by any means necessary.
The journalist is his mirror, a carefree bro who gets shades of dickass once he gets a taste of power.