[Junko can't help reacting to him but what's far more notable is that her expression doesn't change. Her body language does, though: Her shoulders relax and her breathing alters just a little. His answer softens her that much more and she ends up pouting, glaring at a corner of their little compartment.]

... Honestly, why do you make it so difficult to protect you? [But if it's that he wanted to challenge their father then that's another issue entirely, it changes how she has to look at the situation! And for as much as she wants to insist that he was just being selfish with Olivia, he was talking from his heart.] Well, fine then. If you keep it up then you'll eventually have to deal with him.

[So he might as well go for it ... She just kind of hopes that no one else gets caught in the middle. It's an unreasonable expectation, of course.]

See? There's no reason for the two of you to bicker. [Charlotte squeezes his leg, honey dripping from her words and in her immediate area.] Where are we going?

[Junko:] It's a surprise, but you'll all have fun.