Lovely Superstar : My Badass Assassin

Once, she left him with a note and a ring, telling him to wait for her to come back. 3 years later, she indeed came back. However, she had forgotten about him. But as they were tied together by fate, they always bump into each other. When he first saw her, he already knew she was that girl he's looking for. But when she said "Sir, do I know you?" His smile froze. 'She had really become an actress, but she had forgotten about me' ... As he kept appearing in front of her, she kept avoiding him. Until one day, he was hurt because of her, she felt her head hurt so much. She saw a scene of her and him, it was their younger self. 'Did I know him before? Perhaps by being with him, I could regain my memories"