Kinda sad that Kiki couldn't tell her anything...
I only wish Kiki would vocally ask if it's wrong that she (still) thinks Michiru is cute. I feel that would've made an amusing moment.
Michiru's backstory went from "yeah I understand and it sucks" to "oh shit okay wait a minute" in the span of a couple of panels, holy crap. But yeah, the entire thing, she's "cute", but no one looks to see beyond that, and her entire being and essence are dismissed as simply "cute". This stings, and what sucks most is that no one aside from Mr. Kiddie Diddler over there was ill intended, hell, it looks as if most people adored Michiru. It's a tough position to be in, and tougher chains to break from.
On Shion's side of things, I'm not buying into the aloofness. I'm reading it more as suppression and/or denial, or perhaps she had not yet fully realized, but there's a bitterness to her entire situation that I feel her character is still processing, and she is still in the stages of growth. I'm assuming there'll be a lightbulb moment for her sometime in the future, might be directly influenced by Kiki and Michiru's pretend play coming up, where she'll finally resolve herself toward some goal, which I'm guessing would be to surpass Kiki or something along those lines. The good old "only then can I walk by her side with pride", or something like that.
Kiki coming up with the idea feels kind of out of the blue, but it also feels like the whole notion, the entire concept was something that was firmly on the tip of her tongue looking for an opportunity to plop out, and here it is. The allusion and parallels were there from the start. I'm looking forward to seeing where this slippery slope leads, and there's a joke about slimy physical intimacy that escapes me and I cannot fully articulate, but yeah. Michiru's reaction can and should be delicious.