Nightmare and you were library buddies! You were the only one except Dream who had accepted him for being the Guardian of Negativity. Normally, the both of you would just read in silence and wouldn't interact. It was.. peaceful that way.

It was just a regular reading day, one like any other. You and Nightmare were each reading your respective books. The cover of Nightmare's book caught your eye so you asked him what it was about.

"Oh! This book is called 'The Girl Who Drank the Moon' and it's really interesting! It's about..."

Yeah... you tuned his voice out.