//Not for nothing, but for all that my actions tend to get scrutinized more than anyone else's for the possibility of causing problems, I'm starting to get really tired of someone else's carelessness repeatedly actually causing problems.
//I'm about to go to bed, so my vote is just a simple go-back-in-time-and-try-again. I'd rather just end the aggravation now and placate Sakuya later if it comes to that. Note that, on the second time around, I would rather (a) just straight-up tell Eirin we're inside her, or (b) leave Eirin's body before the investigation gets too seriousness, rather than how things actually went down.
X (T):
> I'm not sure...I thought it might be your magic, but maybe not...
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2 (T):
> "Okay!"
> Stop growing Hamiya's chest.
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SenDai:
> Continue the growth while holding our hands in place.
> (F) ...Or maybe it can? I have this opportunity now, and it could be changed later if need be...
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YamaBug:
> Continue listening.