I Hate the Deadly Sins Dragon!

Rabi, a dragon who destroyed an entire continent at her birth, is held in a special prison dedicated to inhuman monsters. The guard in charge of Rabi is a young man named Lucien, whose hometown was destroyed by Rabi. She is an enemy to be hated, but Lucien finds Rabi too cute to hate even if he wanted to... (Source: Comic Cune, translated)