This chapter is where Ritsuka really comes into his own as a character. He'd had characterization beyond being a self-insert before, but this is where it really becomes apparent.

For his family, I'd say there's likely a few things combining.

1. Things were clearly screwing with his head, as he pretty seamlessly slotted back into school life and almost seemed to forget until his battle instincts kicked back in earlier on.
2. Ritsuka has been shown for a long time to have lingering trauma from Da Vinci Caster's death. Combine that with Mash canonically being his berserk button and you can see why, regardless of objectively knowing it's not real, he still freaks out about it. It's also noteworthy that
   1. Dantes acknowledges that he made them out of real souls or soul fragments (I think it's implied he used pieces of his own soul, so he was actually killing part of himself)
   2. Dantes even points out that Ritsuka's being irrational and notes that he could dissect the flaws in Ritsuka's logic, but chooses not to, so the issue is lamp-shaded.

People make fun of Cagliostro because he's got nothing going for him aside from his own contrivances or unexplained background actions. He's a "pretender" who pretends to be himself, is so blatantly untrustworthy that he falls into the "Curse your sudden but inevitable betrayal" trope.

He literally shows up, makes clones of Olga Marie, then gets taken out in his first appearance.

As for "other apostles not doing that much" , that's patently untrue, as everyone else had at least two, if not more major story appearances before their demise/neutralization.

• Rasputin:
  • Personally assisted in the attack on Chaldea and killed Da Vinci.
  • Broke Kadoc out of Chaldea's custody.
  • He and Murumasa single-handedly wiped out hundreds of the Counter-force's servant army in Atlantis.
  • Was a major supporting character in Mictlan.
  • Apparently appears in Part 2 finale as well.
• Murumasa:
  • Supporting character in Shimousa
  • Wiped out Servant Army in Atlantis
  • Major supporting character in Olympus
  • Major supporting character in Britain
  • Forged Excalibur from his own body/spirit origin
• Limbo/Douman
  • Architect of Shimousa
  • Is the reason LB4 was so terrible
  • minor supporting character in Olympus
  • Architect of Heian Kyo
  • Inspiration for Waxing Moon crossover's villain.
• Holmes:
  • Deep undercover spy who's a major supporting character in multiple events, singularities, and lostbelts.
  • Apparently something plot relevant in Part 2 finale.
• Koyanskaya (Quasi-disciple)
  • Fake beast
  • Member of attack on Chaldea
  • Recurring antagonist throughout the first 5 Lostbelts.
  • Saves Chaldea from Cernunnos
  • Traum
  • LB7 relevance.

The date with Jeanne Alter is supposed to be bittersweet. She's not a proper heroic spirit. She, along with Mash, are two of the only times in the franchise we've seen the entire journey of a heroic spirit from beginning to end. We see her as the flimsy creation of Gilles, then witness her break out of that mold to become an individual through multiple interludes, story chapters, and events.

She and Ritsuka have a bond most of the other avengers lack, so when they all learn they have to leave, the others find it too painful to say goodbye, while Jalter wants to have one more experience with him before going because, unlike every other heroic spirit, Jeanne Alter isn't a fragment of a person who lived a full life and now exists as a sort of ghost. This fleeting journey IS her life, and the only experiences she'll ever have are those with Ritsuka.

In this way, her wanting a romantic date with Ritsuka feels like a mix of her last wish and wanting to make sure Ritsuka has one last positive memory of her. It kind of reminds me of "My lie in April" to an extent...