Responses
you should look up the definition of incest before you make that claim. they are not related by blood, but were raised together for HALF of their childhood and were aware that they are not blood siblings. the whole point of the story is about forbidden love because they are step siblings and not real siblings.

Being with someone as brothers since ur childhood when ur just a little kid I makes u family, it doesn't matter if it's blood related or not. Bro .... It's incest , they were raised as brothers. So strange, it seems the author wanted to make incest and to make it more "correct" it says it's no blood related. But I mean, their parents are married