When is Balance going to make me cry?

For whatever reason I'm finally getting into TAZ. I've mostly avoided spoilers, but I know there are Big Feels towards the end of the Balance arc. What episode does the heavy stuff start showing up in? Is it clearly telegraphed ahead of time or pop up suddenly?

Apologies in advance if this has been asked and answered a million times.

ETA: Thank you all for sharing your perspectives!

I should’ve been clearer in the title. I’ve been listening to it at work a lot and I’m trying to avoid stumbling into a strong emotional reaction when I’ll be stuck there another ten hours. I just started Petals to the Metal and it’s becoming clear how powerful these stories could become.