Yes.
you need to get true end where you save Hyakki by reloading save before her death after she dies and buying her self destruct weapon and maxin affinity with most of the monster girls you also need to save Mukuro by first defeating her then getting her memento where you see what happened to her brother and after that going back either by loading a save or using the chapter select
I saved everyone, including Hyakki, and earned 100 friendships with everyone, but Hyakki never appears in the room, and the endings remain the same, I really don't understand what I did wrong. The last time I meet Hyakki is when she hands me a cassette and then just leaves.
Is this the one that gives out different supplies for glasses? It turns out that it’s better not to talk to her and not to take anything from her.
How do you access the chapter select from saves that are post game? Most of those saves take place in the recollection room, and when selecting them with the chapter select, they'll just resume your progress from the recollection room with no clear way to exit.
Kazuya is unable to use interventions (and magic) after the final battle, thus it's impossible to use Chapter Select from the "game clear" saves (magic usage can be restored with the capsule, tho).
By delusion capsule I'm assuming you mean that recollection machine down the ladder? Thank you. Now its just a matter of finding a save where someone actually has Daji there as an option.
You NEED guns for some fights. No way around it.
Managing ammo is part of the game's meta strategy.
Download "Save (EX-2 clear)" pack from my shared folder, load the third save (TM clear one), go to the capsule and choose 想ひ魂（夢狐） [Memory Crystal (Dream Fox)] to trigger the event.
I think he stealth buffed some enemies for sure, but not by that much. For instance, Reverse Storm is now introduced all the way back in the fight with Empuse instead of in the fight with Mukuro. The hidden doll bossfight to get Mukuro also uses physical attacks and has charm and magic attacks now as well.
There's no adult content in the genocide route (Unless it's GOR)... Hmm... Actually Hyakki's paizuri kills you so it looks slightly different. But it's mostly just rage and angst. Since the game's not fully translated it'd be hard to enjoy even for RP reasons, but the combat is tougher in genocide.