axed. here's some axed threads the author never got to expand on
1. the shadow haunting over old man was resolved through a joke in an end of chapter omake, where it basically got blown away due to the house explosion.
2. the whale talking to ponko and saying she wants to be a real child is never explored on again
3. one thats hinted in this chapter here, is that ponko is the reincarnation or at least a replica of chiaki, or a container for her "soul"
so lets expand on 3.
ponko is more human like than what a robot would be.
everyone who meets ponko at first thinks she's old guy's grand child because of her resemblance to chiaki. yes its a physical resemblance only but it adds up with all the other stuff
ponko, in the early chapters, have already shown her ability to scan things and put it into her system. photos, etc. it is not implausible that ponko had "scanned" chiako either during or after her death to preserve whats left of her
in this chapter, i think everything in the flashback with chiaki and old guy and their activities, have been done in this manga, but with ponko replacing chiaki.
i think the most telling thing is the last scene when they're walking and they hear one more time. ponko hears that, but the old guy didnt say or hear it. so who said it?
it was inside ponko's head. and then the last "thanks, ponko chan", while on the surface it seems like its ponko saying thats what the old guy said to make fun of him or put words in his mouth.
but ponko has never EVER shown that kind of snark or intentional teasing towards the old guy. so why would she say that? especially since it sounded full of sincerity
because it is chiaki inside ponko, who said it. she is thanking ponko for everything.
throughout the manga we were told that the reason ponko got sent to old guy is because it was chiaki's last wish. someone to take care of him when she died.
but this chapter shows the last moments of chiaki and while on the surface it seems like its just the death scene, the subtle hint that supports this theory is that we see what chiaki's last wish REALLY was. it wasn't to make sure the old guys taken care of.
it was to have a stronger body like ponko, so that she could spend more time with her husband.
and if we then apply that to the start of the manga, that ponko is here because of chiaki's wish, then the only way ponko could be fulfilling her wish, is if she is the container of chiaki's soul, or her reincarnation.
combine that with the sophistication of the robots and the amount of mysteries behind them thats unexplored, and with the whale's conversation with ponko, i'm really confident that this would have been explored in depth by the author if it wasnt axed.