>>1333421Here's something you can try:
Open Ridibooks
In Ridibooks, open the manga you want to read
Open Resource Monitor (resmon dot exe)
In resmon, go to the CPU tab
Check the boxes next to Ridibooks dot exe
Read the list of associated handles below, see if any of the handle names end in ".jpg"
If you find any, find them in windows explorer and open them.
I'd do it myself, but I can't read korean and I can't purchase any manga to try.