My suggestion would be to start talking to them about consent, as a basis.

Right and wrong would lead into that after, but if you get them to understand they shouldn't do something without asking first, and to not do something if someone says no, that should make teaching the rest of it a little easier.

[ jack's sitting at a hotel desk. you can't see his face, but he has his skitty and his alolapix on the desk. crybaby is grooming angela's hair. ]