Hii, I saw in another comment from the creator that the preferences for the NSFW scene will be decided during the scene itself (sorry if I'm overstepping).
This is what they said "When the time comes, you’ll get a little prompt like (in Rosario’s route):
- “Do you want me to spoil you?” — this puts you in the sub role.
- “Do you want to spoil me?” — this puts you in the dom role.