This isn’t about incest, we never had sex.My sister and I were/are close. She supports me being bi and lewd. When I was at home, I usually didn’t wear much. I usually just wore a big shirt and socks only, though sometimes I wore other stuff. Sometimes a bra and panties only, sometimes just a jacket or robe, sometimes a skirt and tanktop only. My parents didn’t like when I did that since it was revealing, though they let me do it since I agreed to not be naked or have my breasts out when they’re home. My sis supported me doing in though, and sometimes gave me a slap on the ass when I did. My brother sometimes did the same, though he would usually start groping me and I would get mad at him.
I told my sis I was bi, after she caught me smelling my panties and masturbating. Since then she would let me take panties from her room and smell them, as long as I put them back. Sometimes she would even give me the ones she was wearing at the time, though that didn’t happen often. Mostly just on holidays and when I was sad.She got me my first sex toys. A dildo, vibrator, and buttplug, and told me how to use them. She did this about a week after she caught me using her dildo. She left it in the shower, and when I entered to take mine, I saw it and decided to use it while showering.