Because "SOS" is a neutral, emergency-related term, content creators use it to bypass aggressive content filters on platforms like Twitter, Pixiv, or DeviantArt. It acts as a coded warning to adult content hunters that the material involves coercion or distress.
"Inma" is often a term associated with mature-themed "monster hunter" style games or specific niche titles. If you are referring to a fan-made mod or a specific character build in a game like Monster Hunter , there is no official "Nami" character in those titles. nami sos inma hunters