Brother's stepbrother Nagi transferred to a boarding school to look for his brother, but instead he meets Kou, who strangely says the same words to him as his brother. I'm honestly a little confused as to the relationship here, but it's not technically incest.
Neighbors (calls himself his "father") When Akane was born to a single mother, his young neighbor Kyouji announced that he'd be Akane's father. Now, years later, Kyouji is still more than happy with that relationship, but Akane is not having it.
You may feel your favorite manga should be gathered together into distinct categories for your own reference and, now, you can do this with a LIST. After you've created your list or lists, you can proudly recommend them to other manga fans to showcase and share your taste in manga.
Gin no Kajitsu