The fact that the big guy is explicitly included in the sign marking the seats feels "very japanese", but its a bit unfortunate that the comment has to point it out (only realized that after seeing the sign part).
"in the old days I would have needed to traverse the mountains by food, you humans made this so much easier, I'm thankful. These old legs don't carry me like they did before"
"have you considered buying a cane? , us old timers are at more risk of tripping"