Greg
"She loves everyone. That's not something special." *Kazuko continued to behave pretty grumpily while Kagayaki insisted. Why should she let her in? Misaki did indeed like everyone the moment they showed any sort of kindness. It also was only fair, since she did not let want to allow Kazuko near Pan.

The moment she smiled more after being smacked, Kazuko's face changed into one of slight confusion and disgust.* "Stop that. Why the fuck are you smiling?" *A stronger punch came right at the spot Kagayaki had received one multiple times. If that part wasn't bruised now...* "You're supposed to dislike it. Why the hell are you doing... That?!" *Her finger pointed at the whole face there. Did she really dislike smiling of others that much? Well, not necessarily. But this one was just irritating.*
Renee
Kagayaki chuckled, "She sounds like a great girl, how old is she?" She inquired about the other's sister. It was true Kagayaki did not want Pan to meet Kazuko just yet, she knew Kazuko deep down wouldn't hurt her, but Pan's shier behavior would probably annoy Kazuko and she didn't want the Kaguya shouting or insulting her best friend. 

She took the punches like a champ, they did hurt a bit, but she knew revealing that it hurt was exactly what Kazuko wanted, and even if it made her stop, a stubborn part of Kagayaki wanted to prove to Kazuko the blonde wasn't as weak as she thought. "I do dislike it, but that doesn't mean I can't smile." She kept her trade mark grin on.
Greg
"She's ten. And of course she's great!" *Whoop- Sounds like an overprotective older sister! Even things like that triggered her instincts. The girl was great, obviously! The best person ever. No one could top that, not even in the slightest. Her little sister was someone Kazuko would die for. The only person that has that privilege.

The punches themselves were not meant to actually harm Kagayaki, but if Kazuko was genuinely angry and would go for a strong punch... Tanking it just like that would end painfully. Luckily, Kazuko was not nearly as pissed as she could be. Happier times for everyone! The grumpy cat just stared at the other, then raised her chin a bit.* "Good, dislike it. I'd have no problems hurting you if I had to." *This sounded almost like a child pouting and complaining about something. She even folded her arms like one.* "Stop smiling then! It's weird." *For what reason was it weird? This is Kazuko. It doesn't have to make sense.* "You're really desperate. Wanting to meet my sister and wanting to get punched more, eh?" *Grumpy grumpy cat.*
Renee
Kagayaki smiled at overprotective Kazuko, it was nice to see her earnestly wanting something other than food and hurting people. She could feel the love she had for her sister, and it made her like the Kaguya a bit more than she did. So she *Was* Capable of positive emotions.

"Oh, I'm sure you wouldn't." She chuckled at her, "Just don't expect not to come out hurt too." Kagayaki had a feeling she shouldn't have said that, she was for sure poking the hornet's nest. But she wasn't the type to take things lying down, though her tone implied she didn't intend it as an insult or a challenge. 

"I do want to meet her, I'm curious. Though I could do without the punches. What's her name?" She was interested in the little girl, and Kazuko was clearly fond of her, so she decided to keep her as the topic of the conversation.