Romantic or sexual activity between blood-related family members.

Use "[[inseki]]" when they're only adopted relatives or in-laws instead of blood relations.

h4. See also

* [[Siblings]]
** [[twincest]]
** [[sisters]]
** [[brothers]]
** [[brother and sister]]
* Parent and Child
** [[mother and daughter]]
** [[mother and son]]
** [[father and daughter]]
** [[father and son]]
* [[Cousins]]
近親相姦 母子相姦 姉妹百合 姉弟相姦 兄妹相姦 乱伦