As of my last update, Wataru Momose is not a widely recognized author or public figure in English-language sources. It is possible that he may be a new or emerging author, an author with a niche audience, or more prominent in non-English speaking regions, particularly in Japan or other parts of Asia if the name is of Japanese origin. To provide an accurate description, more context or specifics about his works would be needed. Alternatively, there might have been a mix-up with a name, or he could be an author who is known for a particular work or genre in the Japanese literary scene but has yet to gain international attention. If he has recently gained notoriety or if there are specific works attributed to him that you are interested in, providing additional details could help in offering a more precise description.