Every single page has a bit of dust in both blacks and whites.
Page 154
"ding" on the very top left, make it smaller so it fits next to the line
Page 158
Top panel, second bubble (double bubble): add a break with hyphen like so:
Fumi-
chan!
Page 163
Second panel, first bubble: "care free" should be one word >> carefree
Page 169
Second panel >> "Mm..."
Page 173
White out the vertical print on the top left outside panel.
Third panel, first bubble is missing "I" >> "If I write a new song"