Incest is defined as romantic or sexual relations between people classified as being too closely related to marry each other. On Anime-Planet, we apply this tag when: 1) the characters are related by blood, or 2) the characters are related through adoption or marriage and have a long history together. If characters have just met through marriage and develop a romantic relationship, even if the taboo aspect is discussed, we do not apply this tag.

Lily of Two Colors

Chapter 19 March 15, 2022
Chapter 18 March 15, 2022

Ryokataomoi na Futago Shimai

Chapter 35 January 19, 2022
Chapter 34 December 28, 2021