So... 1 in Page 9 is first appearance 2 in Page 10 2nd panel behind Saitama arm and second to last panel in the window above the gate 1 in Page 11 first panel on the chair 1 in Page 12 second to last panel behind the couple holding hand 1 in Page 14 in the 3rd panel between the rock behind Fubuki 1 in Page 15 is the phone screen, no idea if it count or not 2 in Page 16 4th panel flying in the sunset and outside Funuki room in the last panel 1 in Page 19 behind the rock in first panel 1 in Page 25 third to last panel on the roof 1 in Last panel the reveal of the phone screen. Not counting the phone screen again.
That is all 12 unless we are not supposed to count the phone screen on page 15, then the last one is the shadow in the door on Page 12 3rd to last panel
Base +14, Pr1de +19, NeoASHMAN +10, a214908a +6, tobeunforgiven2 +28