The Dragon's Fake Fiancée

Cosmo has been living in Rawr County for the last 10 years because he hates himself and wants to be miserable. Dragon Isle was no good for him. Everyone there was too happy and joyful. A dragon like him deserves to be unhappy. When his family tries to set him up with a childhood friend to date, he blurts out a lie: he's engaged. It's not true. But when they surprise him with an unexpected visit, he grabs his nearest employee, Athena, and introduces her as his fiancée. What could possibly go wrong?