Bed to Office de Chigau Koi

After her mother passed away, Elizabeth was going through her mother's things, when she discovered a letter that told her the true identity of her father. She decided to do whatever it takes to meet him, which means...becoming his caretaker? At least this way, Elizabeth decided, she can stay by his side. He takes a liking to her and she works hard as his devoted caretaker, but there's one man at the mansion who views her with suspicion. It's her father's adopted son, the coldhearted, hardworking Andreas. He's convinced she's out to steal the family's wealth. He orders her to spend nights working as his secretary so he can see what she's really like. Will he discover her true identity? (Source: Renta!)