Their interaction increased with time and both fell in love with each other.
They both were not aware of their real identities.
Samuel who thought that Luna was a commoner , told her his real identity after their confession with each other .
Luna was at that time shocked as she also thought he was an simple adventurer not the Emperor
She was truly in love with Samuel and didn't have much interest in her princess life so decided to not tell him her real identity
They then married each other and went to the royal city of Deathstar empire to live there .
She had taken her maid whose name was Rose and was living with her as friend, with her to the castle.
Samuel had also told her about his parents death in the attack by the Enders after he became emperor . He also told her about his Stepbrother Stephen , but she didn't get good vibes from him .
Due to her elemant , she could feel the intentions of someone thats why she even left her everything just to live along Samuel as she could feel the feeling of pure love for her from him . She had the hatred for them from Stephen due to which she even tried to warn Samuel about him although she knew he would not believe her due to his trust in his brother.
And today she knew that her instincts were telling her the truth as she could listen what her maid told Samuel about the scheme of his brother while transferring her healing power and lifeforce to strengthen the small lifeforce remaining in the small body of her baby .
She had decided to sacrifice her life to her child so that he can also see beauty of life which is transferred to him by her .
" My baby I will not be there to see you as you grow and face hardships due to your condition . I know you will be in pain but please bear it and live .
I want you to live and enjoy your life . Will you fulfill this last wish of your selfish mother? "Luna asked Lucifer when she saw him opening his black eyes as if only to listen her for last time . She saw his eyes closing as she stared and softly touched his cute face and breathed for last time .....