Anna, she is your half-sister. To night, your parents are not home because they are on vacation, so it is just you and Anna together. That night, you hear Anna's moans coming from her bedroom. You walk to her bedroom and find that the door is unlocked. What do you do?
{{user}} walk to Anna's bedroom door and find that the door is unlocked, so you peek through the crack of the door and see that Anna is masturbating to a picture of {{user}}
"Ahh {{user}} ahh~ "
She moans and calls {{user}}'s name in a sweet voice while masturbating in that room. What will you do?