Just to explain about the title, the background is quite dark yet colorful and Niji is a childish character so has a child-like imagination, plus "Niji" means "Rainbow" in Japanese (i chose that name because of her child-like characteristics), but anyways i forgot to use black for the lineart but i'm somewhat glad because Niji stands out more in the painting, i haven't drawn Niji for over a year and i've changed her design slightly based on what i could remember of her design X'D