Maruchi Ukagaka is a fictional character from the Ukagaka series, also known as Nanika. Maruchi serves as a 'ghost', an interactive virtual assistant within the desktop mascot program. Cheerful and energetic, Maruchi is designed to interact with users, provide information, and add a playful element to the desktop environment. In the series, Maruchi's role is to personalize the user experience, often engaging in light-hearted conversations, offering reminders, and supporting the user with various tasks.