The Devil Master Dotes on the Little Maid Alone

She was just an ordinary girl who stayed at her aunt's house because she was going to school. Who would have expected that she would be unlucky enough to meet a bastard young master with a weird and paranoid temper? Childhood sweethearts betrayed because of revenge, and the brotherhood in their youth collapsed! When the mystery of their life experience is revealed and their love has become dusty, can they still find their original heartbeat?