Posted this comment elsewhere, but is relevant here so I’ll repost:

Further research is needed, but when digested casein breaks down into casomorphin which might bind to opioid receptors and release dopamine.

Sources:

• https://en.wikipedia.org/wiki/Casomorphin
• https://efsa.onlinelibrary.wiley.com/doi/10.2903/j.efsa.2009.231r
• https://www.healthline.com/nutrition/is-cheese-addictive#your-brain-on-cheese

As someone who hasn’t seen either of the versions, but just seen what people wrote about it. The live-action Mulan succeeds in her endeavours because she is the chosen one with magical powers, while in the original she did so through hard work and being clever.