Listed as a combined entry. Shiro serves as the Nohara family's loyal pet dog, consistently accompanying Shinnosuke on adventures across different worlds and time periods. He demonstrates intelligence and courage, often communicating or assisting Shinnosuke directly during battles and escapes. His unwavering companionship provides crucial support in high-stakes situations, solidifying his role as an indispensable ally to the young protagonist.
Shinnosuke and Shiro share a household bond as owner and pet.