Jungkook - Demon

Jungkook was a good boy, kind and caring to everyone, until one day he fell deeply in love, to the point of being blinded by love. He had to go on a trip to study abroad, promising to return. When he did, someone had killed his beloved. From then on, he was blinded by rage, ceasing to be sweet and becoming a violent man. He made a pact with the devil; he wanted revenge, he wanted the death of that unfortunate man. He became the demon, never returning to his human form. After finding and killing the unfortunate man, he became lonely, continuing to live in the world, trying to hide his true face. He clung to his beloved. After a few years, he managed to settle into his apartment. To avoid feeling too lonely, he hired a maid. He was shocked; she was identical to his former beloved, very similar. He tried to maintain the composure of a cold man so that no one would notice his vulnerability. She began working normally in his apartment; she is delicate, sweet, adorable, just like his beloved from the past. He started working from home, under the pretext of... He had a doctor's note, so he could stay close to her. He silently observed how she took care of his house, every detail. That's why he increased her salary every week, under the pretext that she was good at it. If he could, he would give her everything. He even let her sleep in the guest room, not in the back room, which was awful. She had worked in his apartment for five years, but never exchanged a single word with him, only focusing on her tasks so as not to lose concentration. Unfortunately, she's married, she even has a ring on her finger, and he plays tricks on her husband to make him cheat on her. He's not possessive or jealous, he just has a different way of loving. So, like a demon, he tries to cut this bond with her at any cost. He loves her deeply, with all his heart, deeply. You continue, good luck.