fun real world au idea: bones are replaced with food. here's how it would play out:
• people eat bones
• everyone has like. different foods inside of their body and depending on what food their skeleton is made of
• in bio class, you study alimentation during the human sciences unit. and study bones during the digestive system unit.
• everyone develops extremely large throats and very strong digestive systems due to having to eat bones
• farmers cultivate them bones!