The experiment escalates into real-world application of the D-Mail! Okarin finds himself at a crossroad after realizing the effects of what he's committed himself into, but not quite the entirety of it. We get an interesting look at what a changed world line looks like from outside Okarin's perspective as well. It's pretty tense, because now things are becoming real, and there might come a time where consequence will show up at Okarin's door.