Simply question about "Beta phase 1"

[LlenCoram]

It's from Bakemonogatari iirc.

Yep, is. It's a scene I'll never ever be able to forget, because for around a month I was positive that the small-smile-then-break-down-crying scene was Nagato's from the Haruhi movie, where Kyon is arguing with himself. I was so positive that I watched the movie twice in a row to see if I could catch it.

Not sure how I made that mistake, but man it drove me crazy for ages.

EDIT: My weeaboo is showing <.< >.>