[By that he means nothing sweet which, for someone who almost exclusively eats sweet things, is an utter tragedy. He could try to go back to the dining car to secure sweets for himself but he'd rather not risk the museum car (and his eyes) again.
To make his point, he decides to send a picture of the vast landscape of the BotW car, featuring grassy hills and a few rocks...
And Satoru himself, in the middle of the frame, grinning and making a peace sign. Look at how starving he is...]
no subject
[Debatable! But on the subject of food:]
nothing good
[By that he means nothing sweet which, for someone who almost exclusively eats sweet things, is an utter tragedy. He could try to go back to the dining car to secure sweets for himself but he'd rather not risk the museum car (and his eyes) again.
To make his point, he decides to send a picture of the vast landscape of the BotW car, featuring grassy hills and a few rocks...
And Satoru himself, in the middle of the frame, grinning and making a peace sign. Look at how starving he is...]