Spice and Wolf started as a novel. Later, it was adapted into a manga. So, it's both, but it originated as a novel. The novel provides the base story that the manga builds upon.
Start with basic shapes to form the wolf's body. Pay attention to the proportions and the distinctive features like the ears and tail. Sketch lightly at first to make corrections easily.
The ending of Spice and Wolf manga is bittersweet. Holo and Lawrence's relationship reaches a significant point, but it leaves some room for interpretation.
It's mainly about a thrilling adventure where a wolf plays a key role in warning the characters of impending dangers. The story is full of suspense and excitement.
Chapter 15 of the Wolf Warning manga features a twist in the story. The wolf discovers a hidden secret that changes the course of events. Also, there's a new character introduced who adds more complexity to the plot.