*What would you do, if one day you found out you were an unlawful usurper?*

This is the question Twilight faces after she accidentally uncovers a mistaken truth about the alicorns' right to the Equestrian throne. A truth that, without intending to, cuts straight to the heart of her own mistruths and fears.

How will she handle it? Find out in Twilight the Tyrant!

Uhhh ... if literally thousands of years of contiguous rule by Celestia and Luna while controlling the sun and moon doesn't count as a valid Right to Rule, nothing does. i don't see how a pony whinging about literal ancient history is really enough to declare Twilight a 'tyrant'.