I buy all my books new, and I don't think they're very sun-faded. I don't have any pets, so I don't think there are any smells on them. Demon Slayer: Kimetsu no Yaiba Complete Set of 23 Volumes - Series Name: Demon Slayer: Kimetsu no Yaiba - Volumes: Complete 23 volumes - Author: Koyoharu Gotouge Thank you for looking.