The first pic on the left comes from Gad Guard and the next one is from Speed Grapher. I’ve mentioned a link between these two series before, but I overlooked the use of “Sunday” so I thought I’d mention it here.
The third picture is also from Gad Guard, but the fourth is from Paradise Kiss. Given the similarities between these two series, the link between the two seems obvious. Tabun.
Now, the pic below on the left is obviously from Super GALS, but can you guess where the pic on the right is from?
If you said Gad Guard, you are well on your way to becoming a detective like those kids from Tantei Gakuen Q. I’d give you a gold star as a prize, but that’s too much trouble, so settle for a pat on the back (you’ll have to do that yourself of course). I wonder why I never noticed it before…