A Look at Monster Book

You can set it to open to a specific card if you want. People tend to do this with the cards of their favorite monsters and/or really rare cards that they're proud of obtaining. You can also undo the setting and return the default page to its opening page.

Hmm how do you set this o_O?

Right-click the card, and left-click on "Set as Cover", I believe.

O_O oh okay I'll try it later.
MSEA's having a server check and cash shop update >.>