After this, well, he still doesn't talk to Aiko. They made a bet and he lost and punpun won even though afterwards, he didn't feel like he won. He thought it was selfish considering he has broke his promise to go to kagoshima with her and they hadn't talked for a long time, 2 years actually. In middle school a boy named yuguchi was the boyfriend to Aiko. Punpun's dream was to become a "space scientist", what he meant was an astronaut lol. With this said Punpun tired to reposed about it and just nod his head because he had no idea. I'm not going to get personal but I'm everyone remembers stuff when they were a kid even if it was really stupid. If you yourself can take a moment from reading this and remember things you for some reason remember, you don't exactly know why you remember it, you just do. As they're walking home she tells Punpun that once the oil runs out on earth that will be the end of humanity so to survive they'll have to colonize another planet for humanity to survive. So let's back track a bit from that famous page. Of course we've had previous interactions. Moving on from that we have when they saw the meteor shower(the milky way) at the old factory and for Punpun and Aiko this was an amazing moment. He's taking a liking to a girl from first sight or as some may say "love at first sight" even though I hate to say sthat because it wasn't really love at all but whatever. She introduces her self whilst Punpun is mesmerized. The exact start of chapter one when punpun is at his desk entirely innocent but then the teacher announces they have a new student with the loss of Miyo(their former classmate). It's Asano really trying to push the emotion of every thing we have seen from Aiko, every interaction that Punpun and Aiko had. The panel you see punpun looking at iko hanging in that I guess some sort of scrap yard of some sort, I don't really know the exact location of it. Ive defeated with myself long enough where to start this and I've came to the conclusion that I should tell the ending from when you see aiko hang herself. Okay before we get into anything else we have to first address the ending of the manga.