What does Kazuyuki think of the Truthlight in each ending ?
In the bad endings, he thinks they're an idiot, and he's very pleased that Yukimura and Zahir leave. He's not overly fond of helping people who won't listen to Yukimura.
In a neutral ending, he frankly forgets about them in the 10 seconds it takes them to leave.
He has no real difference in romantic versus platonic endings minus being extra nosy about long term romantic relationships (much to Yukimura's dismay).
Ironically, as he is a Harmony Angel, he actually dislikes solo routes (AKA: You favor one over the other) over the poly routes. To him, you become something adding an extra layer of friction and burden. That displeases him, but he just stews on it since apparently this is normal. He doesn't get it though since he doesn't understand prioritizing one person over anyone else too much in that sense.
