Here's the difference, they were not raised as brothers, they were raised as friends
The dude with the crush in this story was raised by the family of Ai before he was even born, they were raised as BROTHERS. He was there when Ai was born.
Mc and ml (forgpt their names, it's been years) of CBAW were raised separately even the mc's mom said something like "It's a shame *ml* was born a guy, then our kids could've gotten married"
Think of it as the difference between childhood friends and adoptive/stepsiblings.
Also hope this doesnt come off as rude, just tryna explain the difference between the 2 couples
Please don't misuse the premise of a stepchild, a step child is a kid who was born/joined from a stepdad/stepmom, both Haebom and Yu did not have parental figures joining the family. So no Yu is not a stepchild nor a step sibling, he has literally no blood relation to both the father and the mother. Here's another one, I think I remember ahjumma saying "he gonna be your brother now" or "he's part of the family now" so there's that too.
But the problem with Yu is the fact that he was raised, since infancy, by the parents of Ai, he was not like an older brother to Ai he is an older brother to him. Haebom was not taken in during infancy, he was taken in when he was 7, he did not spend the critical periods of his life as Taesung's brother. Yu was not only raised in the same family as Ai since his birth, but he was also there when Ai was born too. Addressing more comments, this relationship also feels groomy because of the fact that they grew up together and Yu was literally there when Ai was born and specified that he "Didn't know when his feelings changed" indicating that he could've started like him a WEIRD points... ew
You should also know that Ai knew from a very young age that they are not biological brothers, also I think we have different terms for incest because Yu and A, liking each other isnt considered to be incest in paper, since there is no blood relation, since in your case, you feel like incest comes with "being their during infancy" which is interesting. Also the groomy part ive seen many times but if people read just correctly they would actually understand "Didnt know when his feelings change" refers to when he felt the obligation to take the "brother" role for Ai since he did say he despise the fact rhat Ai was born, I would like for people to start reading carefully, since it can lead to wrong theories, just saying
That's why it's called pseudo incest
I mean I just dont get why the author went this route when we still have yet to focus on better side couples
Also if Ai's parent aren't also his own parent to Yu, then who does he see as family, he has literally NEVER had anyone else to consider family (Unlike Haebom)
Like imagine you adopt a child and when their an adult they tell you they never considered you family, that is disrespectful as fuck
I hope the author makes Ai reject him to subvert the audience expectations
Also before you ask what's wrong with pseudo incest, there are literally billions of men and women on earth and you decide to pick an adoptive sibling???
Pseudo incest literally meaning sham incest or false incest, meaning it's nowhere near being incest. So no there's should be barely any consequences for dating an adoptive sibling, if so, that just give more suspicion to Haebom who was still adopted, mind you somewhere in the story they said Ahjumma is the "Legal Guardian" of Haebom. Also I don't know where you get this "don't see as family" no one mentioned that in the story, not even you himself, idk if your making up stuff.
You're the one making stuff up I see, let's go by webster definition: Pseudoincest (uncountable) Sexual involvement between family members who are not blood relations (e.g., siblings by adoption, stepparents and stepchildren, in-laws). Either way it's still very gross. I just dont get why outta the at least 3 billion men, I'll go BARE minimum and say only 10% are attracted to other men. That leaves 300 million men to go choose from and you choose family???
From the way you're arguing, you probably don't care about third cousins getting together, because they are barely even related either, there's barely any blood.
Also, CBAW it's within the first couple of chapters just read it
There is a difference between being a legal guardian and adoption. Adoption is a permanent, lifelong, and legal relationship. Guardianship gives legal responsibility, custody, and supervision of the child to the guardian.
You're still not addressing the attachment difference between CBAW romance and Whose Baby Is It. Because there is a HUGE difference between being taken in as a baby and being taken in at 7
Alot of people do date people just to fuck em, a lot of people don't, but dating an step sibling/adopted sibling or even an in-law is just weird and unrealistic. (Yes, I know it's fiction, but I digress)
Also if blood is all that proves relation to you, then just fuck the people in foster care huh? What about the people who are taken out of orphanages and brought into a warm home, they aren't family either cus they have no blood relation right?
To you, that child would have no real family correct?

These commentors will happily read Cherry Blossom After Winter but will draw the line at this. Funny, knee-slapper, har har har you guys make me laugh o_o