This book is printed on mineral paper which is made of stones thrown away from quarries. The result is eco-friendly and practically indestructible even when wet, contradicting the preconception that books cannot handle water. The thread-binding is not affected by moisture and printed in non-spreading ink. The covers were inspired by each novel and expressed in an illustration that reconstructed a particular scene. Designed to fit the Gothic-horror genre, the bookmark is made of PET material and is waterproof. Pouch-type packages were made with waterproof PVC materials that are portable.