Nina's activites

I'm creating this list because i've read many incest manga's intentionally or unintentionally.so i thought of creating a list. 
True incest ( Blood related sis x bro) 
step bro x sis
step father x daughter
uncle x niece  
 twincest

This is my favorite webtoon, and it’s uploaded when I just found out I’m pregnant,
Thank you! ヾ(❀╹◡╹)ﾉ~