First time adjacent Story Books win a CYL through one of their character reps

Book 7 with Gullveig, Book 8 with Eikthyrnir, Book 9 with Baldr.

In before someone says Book 6 counts with Alfonse Sharena and Veronica, those three were already established characters since Book 1 and have appeared in all the books so far except Veronica in Book 9 for now. Also Book 4 was a strange case if you know what i mean.