Topless Princess is Transforming into a Dragon (Patreon)

In this kingdom, the first born princess is to become the protector of the realm on her 18th birthday. Nobody told her that meant she would be transformed into a dragon. On the night before her birthday, they locked her in the dungeon. Her screams - then roars - were heard all through the castle once it hit midnight.

There's an alt version on the subscriber Discord.