Osamu Kuga is a supporting character in the anime Gundam Build Divers Re:RISE, appearing in both the first season and the second season of the series. He is the father of Hiroto Kuga, the story's protagonist, and the husband of Yuriko Kuga. By profession, Osamu works as a freelance scriptwriter, and his creative work is noted for being highly distinctive, with an extremely unique style that sets him apart. In his daily life, he comes across as a somewhat whimsical person, and he spends much of his time shut away writing. His personality contrasts sharply with that of his wife Yuriko, as the two are described as complete opposites in temperament, yet their marriage is marked by a relationship of deep mutual respect. Osamu is also very understanding of his son's interest in Gunpla Battle, showing acceptance and support for Hiroto's involvement in the hobby rather than dismissing it. Within the story, his role centers on the personal and family side of Hiroto's life, grounding the protagonist's journey with a warm and supportive parental presence. His most notable trait is his unconventional creative sensibility as a scriptwriter, while his primary motivation is expressed through his care for and understanding of his family, particularly his son. Over the course of both seasons, he remains a steady supporting figure within Hiroto's world.