School boy with the guardian spirit

In a world where humans and beasts live together, it was quite obvious that spirits, magic, and the supernatural would exist here. But our story is a simple telling of the story of a human highschooler in a mixed beast school, where he would eventually graduate until college. It'll be a tough journey for every inexperienced teenager, but everyone has to and will go through this stage in their life, and our main character is not an exception. Now, how does having a personal spirit help you through your life sounds?