The exclusive edition is 18g heavier than the standard edition due to the upgraded thermal core. Use a precision scale—if it matches the standard weight, it is a fake.
The title is marketed as an "Exclusive" production, often highlighting a specific actress or a unique scenario—in this case, a story involving a hot spring trip and a "first performance" theme.
What do you actually get when you purchase the juq275 exclusive? Here is a feature-by-feature comparison against the standard edition.
How to investigate further (actionable steps)