If you want to know whether your manga is a first print, you’ll need to check the copyright or publisher page—usually found right after the title page, though occasionally at the very end. This page includes the publishing details, copyright information, and most importantly, the print number.
There are two things to look for:
The part to focus on is: 
There are two key parts to pay attention to:
1. The Number Line
Highlighted in yellow, you’ll see a line of descending numbers:10 9 8 7 6 5 4 3 2 1
This is the print line. The lowest number that appears is the print number. In this case, the number “1” is still visible, which means this is a first printing.
If the line started with “10 9 8 7 6”, then it would be a 6th printing, because “6” would be the lowest number shown.
2. The First Printing Statement
Below the number line, you’ll often find a phrase like:
“First printing, December 2005”
This confirms both the print number and the date it was first published.
While all manga will have the number line, not all will include the “First printing” statement. A popular example is Berserk—it only uses the number line. Because of that, many eBay listings claim to be first prints when they’re not.
This is what a first print should look like "10 9 8 7 6 5 4 3 2 1"
This is what a 2nd printing looks like. Notice it ends at "10 9 8 7 6 5 4 3 2" Indicating 2nd printing.
If you're buying online and the seller doesn’t include a picture of the publisher page, ask for one to confirm the print number yourself. Do not purchase any 1st printings that do not show the publisher page.
