in the castle
In the library.
The dungeon is in the castle library.
you can't
if you mean in astro knights, the mcm is in the library in the castle
go to the secret door
next to a bookshelf.
To see the solar system on Astro Knights island, go to the Planetarium. (not part of the game, but an interesting view)
In the palace the right door
you click on the books next to the bed
IS IN DA LIBRARY... SOMWEAR.... and i dongt
You don't need to.
There are two books in the library and one in Mordred's laboratory.