Quote Originally Posted by maotd View Post
Someone knows how thoses new stages in the book world works? It seems we can get two kind of new currency but I don't get the second rarer one.
On top of what Volarmis noted, it seems like equipping higher quality memories increases your 'memory power'. Bronze memories are worth one point, silver memories are worth two points, gold memories are worth three points, and rainbow memories are worth five points.

So you have to decide whether you want more points from silver/gold/rainbow memories that don't have much power to them (unless you bought a bunch of the new upgrade materials) or the minimum number of points (20) from bronze memories that provide better stats out of the gate.