Miyuki Sawashiro is kawaii but those songs were horribru. XD; Dat engrish made me cringe hard.
I think her knowing about his true powers is kinda certain if we're gonna go by this interview:
https://affectionatesarcasm.tumblr....-charlotte-episode-6-interview-with-maeda-jun
The translation is kinda iffy and not supposed to be 100% accurate but I think it holds ground to a degree. As for the resolution you mentioned...I personally find it very cliche. No offense intended but I wouldn't exactly like this series end on such a note. :p But I can see why you'd think it probably can happen. Personally hope not. :v
In fact, for a change, I'd want some despair-inducing ending. I mean, I'll be honest, I'm not terribly attached to any of the charlotte characters. The one I was fond of was MC's sis but she's apparently been relegated to nothing but a plot point, basically, so there goes my attachment to her as a kawaii character. It would be delicious if Kanye II tries to
But on a serious note, this is what my impressions of the characters are this episode:
>>kawaii imouto is a plot point. Period.
>>Wetbro level+=n where n is a pretty big integer. High amount of plot importance suddenly.
>>Speedbro level--. Yusarin level-- in terms of plot importance. Relegated to side-dishes compared to wetbro.
>>Kanye II is just being pushed around and somewhat controlled by Tomori. (speculation)
>>Tomori is, in turn, being controlled by XX who follows XX because she loves/admires him. XX here is obviously that guy. The one that appears in the episode at the end. XX controls Tomori (speculation I guess?)