Why no comments?
Anyways, it's really sad if you look into it deeply. They can't really enjoy a normal life as they expected it to be. No matter how much of a happy front they put up, even something like throwing a baseball is difficult for them to worry about. I just hope they actually get a normal life (with a lil' bit of conflict here and there, it's unavoidable), for both of them.
When you enter endgame type of shit. During one of the earlier chapters they explained the codename, Takashi is the signal of the endgame arrival point, while Natalie signals the ending.