The only seal that doesn't have a star on the map is the moon one, where you have to go get a grimoire that is in the library. (which I'll change) The clues repeat when you go to your bedroom, but I'll change that. Thanks for the feedback ^^
the only clue I get is for the moon. And I have the book but even having it equipped nothing changes. I have beat the cerberus mini game but past that nothing happens. Is there something obvious I am missing?