[Seiryuu]

One question concerning the "explanation": did Heartseed say it would end when HE started to think "well, that was fun", or when THEY find themselves starting to think that?

Also, there's one thing I missed that I saw in the manga:

Spoiler for Manga:

I wish they'd shown Iori's little discussion with Taichi prior to the philosophical musings on individuality. In the manga, she remarks that in the stories she's seen with body swaps, some girl ultimately does "that" to a guys "that", and starts asking Taichi (from inside Aoki) how to do "that" to a boy's "that", and discussing whether she ever really would do "that" to a boy's "that" and try to make it do "that"... until finally Taichi looks at her and asks if she'd really just wanted to say "that" over and over again. And so you know, yes, she did replace all the words with the simple ambiguous word "THAT".