1. That was my entire point. She's not as vocal about it and thus less annoying to me.
2. I did not agree that Kazuha flirts with other guys either. And if it seemed that way then I apologize. I do agree that is reasonable and expected for them to be wowed by actors or magicians because they are famous after all. However, the interest I was getting at was a ROMANTIC interest. And I don't think Kazuha or Ran have shown romantic interest in any other guys at all. But! The same goes for Heiji and Shinichi. NONE of them have been shown to have any REAL interest in anybody outside of their respective "pairs". I mean, Heiji can't even tell he LIKES Kazuha, how the hell could he be romantically interested in anybody else?
3. Like I said before, Ran did exhibit some possessive behavior in this chapter that I did account for. But, she was pissed because seeing a girl didn't put him in ANY danger at ALL. If that's all he was up to then he could've just told her that to ease her worries. Why did he have to lie to her about it? There was no need. Also, most of her rage is directed at Shinichi, not the girl. Tho I do not deny that the girl did end up on the receiving end of some.
Vol.7 File 68:
Ran mostly understands the girl is an innocent bystander in all this and it's Shinichi's fault for causing the confusion. If you'll notice Ran didn't start getting physical about it until after Conan said Shinichi would supposedly call the girl later. She wasn't holding back punching the girl, but Shinichi whom she expected to be inside the house. Her main reason for going to the girl's house was so that she could find Shinichi and kick his ass for lying about the whole situation and making her worry over something so stupid. Ran can be pretty impulsive so if she really wanted to hurt that girl she would've already took a swing at her as a warning. And of course she'd be overly suspicious, the girl showed up out of nowhere and introduced herself as "Shinichi's girlfriend" for crying out loud and Ran, being Shinichi's best friend, had never even met her. :/ That's huge cause for suspicions. Also, if there wasn't something to be suspicious about, then why would Shinichi feel the need to lie to Ran about the girl? It doesn't makes sense from her POV.
4. I find it completely understandable for Kazuha to jump to conclusions and automatically assume Heiji is dating another because, like you said, he's a bit of a lech. I do not deny that fact. However, Heiji just likes to look. Which is similarly how Shinichi acted before he found out Ran's feelings towards him. Shinichi, as we know prior to shrinking into Conan, had a personality and relationship with Ran that is almost identical to Kaito and Aoko.
Vol. 26 File 258:
Kaito is pretty much just what Shinichi used to be before he became Conan. Only he acts a little more bold and is not as obsessed with magic as Shinichi is with mysteries, because Shinichi is more of an introvert than Kaito is.
I agree that Shinichi is not as much of a lech as Heiji is, but it makes sense he was not into the game because he already knows how Ran feels about him at this point and therefore would REALLY have no interest in looking at other women at all anymore. You'll notice that during most of his time as Conan, Shinichi falls under the accidental pervert trope in regards to other girls rather than him intentionally acting somewhat ecchi like he used to be. It also could've been that he just finds those kinds of deductions to be incredibly boring too. :-|
Getting back to Kazuha. What annoys me is usually her handling of the situation.
5. Ah, File 479, I forgot about that. Then, in regards to the affair thing, you are correct and I concede. However, I don't recalI saying that what annoyed me about Kazuha was her jumping to conclusions. I do not fault Kazuha for being suspicious of Heiji, nor Ran for Shinichi. Because Kazuha did have backing for being suspcious, but so did Ran somewhat with how secretive Shinichi's been lately. They can barely talk to each other anymore and it has not occurred to Ran at this point that the case Shinichi's working on is SO dangerous that they cannot communicate with each other. Though I admit jumping to conclusion he's having an affair is a little wild. XD But again, Ran was also angry she thought Shinichi would use a kid so underhandedly, which I do not see as so bad. Next, during the Memories of First Love Case, I can agree that Ran was indeed trying to be nice and hide the fact she was jealous from the girl. What I meant was that over time I have no doubt that Ran would have wanted put her feelings aside and be friends with the girl, because she is a kind person with a big heart, which several characters including Kazuha, have noted on numerous occasions. I'm not convinced Kazuha would have taken the situation the same way because she is always shown to be much more brash, haughty, and immature about her feelings towards Heiji than Ran is towards Shinichi. I also think she has much more courage in that department as well. Which is extremely irritating to me because if she's gonna act that way and confront other women towards him like that then she needs to just hurry up and tell him how she feels already and stop putting it off.
6. Yes, Heiji is worse in that matter. However, Kazuha still has several other character traits that irritate me, therefore I dislike her more. No, Ran only has a tendency to break things when she is angry or rationally provoked (like in self-defense or for comic relief purposes). She's never been shown to do it when actually hurt or seriously upset. Because whenever she is like that all she does is just start crying.
Vol.8 File 71
Also, I'm not so sure Kazuha'd be so willing, seeing as how like I said before she can get extremely aggressive in regards to Heiji. As I see it, Kazuha has a stubbornness towards him that rivals Shinichi in regards to Ran; while Ran, whom Shinichi has also noted is the type to smile on the outside and worry on the inside, is more like Aoko and would try to smile and wish them well off. And she DOES consider Akako her friend, so why wouldn't Ran act similarly? Likewise, I can't see Kazuha as willing to accept Heiji with another girl as Shinichi would with Ran and another guy. And that is my understanding.
Don't get me wrong, Kazuha has her good points too. But for me, most of her bad points are too frustratingly obvious and overshadow the good ones that is difficult for me to like her. Sorry.