Adopted Daughter's Rite of Passage

Aileen was the illegitimate daughter of Duke Keith. His wife was jealous of her. Aileen lived a jittery life at home. In order to make Aileen live a normal life, Duke asked his good friend, Andre, to raise Aileen.
Andre was extremely handsome, so his son Tom also had a good appearance.
Aileen had always worshiped Tom as her brother. One night, Aileen, who was awakened by the thunder, went downstairs and accidentally saw the light in her brother's room. She leaned forward and found that her brother was actually stroking his desire!
Aileen, who had never tried to do anything, felt ashamed but excited. She began to peep at her brother's masturbation.
However, she didn't know that every time Tom saw her behavior, he had always had bad thoughts with his sister. Although the two grew up together, Tom had been dreaming of entering her sister's body every day.
Aileen was finally 18 years old. She had her own plan. She had fallen in love with her brother because of every day's peek. She decided to devote herself to her brother at the important age of 18.
After dinner, she handed the coffee with overpowering drug to her adoptive father.
When Andre was asleep, she sneaked into Tom's room. Looking at her brother's strong body, Aileen was a little excited.
Tom was woken up by Aileen and saw his sister, whom he had been dreaming of, making oral sex for him!
The exciting scene made him unable to control himself. The two of them completed the harmony of life that night.
Aileen studied very well and followed Tom into the same university. The two of them exposed their minds and began to do things behind Andre's back frequently.
Aileen met another man at school—Lucius.
He was a sanctimonious teacher. Having a crush on Aileen's appearance, he often touched Aileen. He even used the excuse of carrying equipment to block Aileen in the gym room and rape Aileen.
Aileen was so angry that she wanted to tell Tom that Lucius was Tom's uncle.
She also fell into despair. How could she explain everything to her brother?
At this moment, Andre suddenly passed away. It was not until then that Aileen realized that she was adopted.
She was Tom's sister legally. Where would their relationship go?