italicizing in keeping with the request for emphasis to make answers easier to spot. "K" for Kyrie, because "I" is too easy to mix up with a first-person pronoun.
- Wrt 1) prioritizing gloating and Familicide over K and the children, and 2) committing it in front of them: V is spectacularly wrong.
- Wrt the threat at the start of 641: It's understandable to react with passionate fury if you think the body of your loved one is under the control of a fiend (panel 8). But 1) if an actual fiend were in control it would invite overwhelming violence, and 2) it's a heck of a way to respond to your loved one if they're in control. K is neither right nor wrong per se, but deeply misguided.
- Wrt tying to explain from 641:8 to 642:3: It's futile from the start of 642 on (K gives them no real chance to do so), but V is doing something right.
- In 642:4, V responds to this frustration with an implicit threat of violence. V is wrong without question.
- K responds with their own explicit, absolute ultimatum. K does so based on incomplete understanding, due to shutting down V's attempts to explain. It's understandable regardless, and may be completely reasonable in the context of a fuller picture, but the question is about this specific crisis. K is wrong for both refusing to listen and the ultimatum, but not without cause.
- V apologizes for disobeying the ultimatum because they "still need to fix everything", and leaves. This one bears mostly on the plot rather than their relationship, but inasmuch as it bears on their relationship it's a mixture of right and wrong. V finally does the most important right thing (backing down from ego), but too late. V is further right to the degree of probability it would have aggravated things to keep talking to someone who refuses to listen, and wrong to the degree of probability K might have backed down and listened if V had kept talking.