[Zakutor huffs in response to Parasagun's agitation once he's on top of him. Really, it's too easy to catch his friend off-guard with all the talking and complaining and posturing he likes to do. Instead of running off the moment that he has Parasagun down, he settles for being agitated right back at him because thanks, Parasagun, that pumpkin was perfect and he'd already worked hard on it and then you ruined it. And just to get his (not entirely serious) agitation out, Zakutor's settling for a few 'mean' play bites. He's careful enough not to upset Parasagun's prey instincts too badly, at least.
At the kiss to his cheek, Souji's eyes widen a bit and he quickly turns right back to his pumpkin (after making sure the zyudenryuu aren't actually killing each other.) And even though he's not being overly affectionate, once Souji realizes there really isn't anyone paying attention to them, he brings one hand up to briefly rest it on the arm Ian has wrapped around him. With how close Ian's standing, their appearance would be suspicious enough. Adding one more thing wouldn't hurt.
The words, however, cause Souji to lightly smack Ian's arm, immediately looking right back at him with a bit of a glare. It's not entirely serious, more embarrassed than anything, but it's there.]
I think you've introduced me to enough new things.
[His own tone has a bit of teasing annoyance to it as Souji tilts his head away and looks elsewhere. He actually waits long enough for Ian to think that maybe he's actually annoyed, before he starts sounding interested again.]
... but you know I don't mind listening to you talk.
[Which, of course, is Souji-speak for "I love hearing you ramble about things for hours", but being in public and having to maintain some type of tsun to his dere keeps him from being that open.]