Ikuko Onabuta is a supporting character in the visual novel series 'Nukitashi' (short for 'Nukige Mitai na Shima ni Sunderu Watashi wa Dou Surya Ii Desu ka?'). She serves as a caring and responsible teacher at the protagonist's school, acting as both an authority figure and a source of guidance for the main cast. Ikuko is known for her composed demeanor and dedication to her students, often providing advice and support during the various outrageous situations that occur on the island. Her presence adds a sense of stability to the story.