Responses
Incest based on bloodline, it because you share same DNA with your bloodline family that's why it forbidden. Because combinating same DNA make teribble result. In case Haru and Ren, it isnt incest at all. They just adopted family, their relation is just on paperwork made by society, not bloodline.
I don't really understand. Isn't incest technically defined to be towards people whom share blood relations with each other? If that's so, then Haru's and Ren's relationship isn't more so incestuous rather more like two people who have romantic feelings for each other and have been adopted by the same parents. Or am I defining incest wrong?