Kuro Usagi is a central character in the anime series 'Mondaiji-tachi ga Isekai kara Kuru Sou Desu yo?' (Problem Children Are Coming from Another World, Aren't They?). She is a rabbit-eared demi-human who acts as the guide and caretaker for the protagonists, leading them through the world of Little Garden. As a member of the 'No Name' community, Kuro Usagi uses her authority as a judge and game master to oversee Gift Games. Her energetic and earnest personality often brings comic relief, yet she is deeply devoted to her friends and community.