The father thought that ML was his son but in truth, his lover cheated on him and was pregnant with the child of another man. So ML is not related at all with the Xu family.

1. MC is fictional. There is a difference between homophobic people and homophobic characters. One is real and bad, while the other is not real and does not reflect the views of the author.
2. Consider: there are 475 chapters. You have read 6. The "Siblings Not Related By Blood" might have been put there by someone who got farther than you.
3. Consider also reading the following translator's note: "OK before people start freaking out its quite normal in Chinese (and I believe Asian in general) culture to spank kids when they’re small as a discipline method. It’s never hard, and at most it’ll sting when you get slapped but it won’t hurt after." Yes spanking is abuse, no most people are not aware of that, yes it's getting slightly less prevalent in some countries, no China is not particularly one of them.
4. The synopsis contains roughly everything you complained about, so I'm not sure why you decided to read this just to rant about what the synopsis already tells people.
   
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Already in the synopsis it explains how regretful he is towards raising his real brother because his real brother turned out gay. Then he tries really hard to make his novel brother straight, trying to dispel "gay" actions of the novel brother. Already I'm disgusted by this character's outlook on homos*xual people. It's like he thinks being gay is a shameful thing (as he says he's regretful of his real brother being gay), then he thinks he can change or guide someone's sexuality through influence (as he's trying to make his novel brother not gay), which I think is soooooo f*cking disgusting. If the kid turns out gay, he turns out gay. Accept it.

Sometimes the MC says it's fine to like "pink" and it's fine if my real brother was "gay", but I can actually see the MC isn't fine and is just a f*cking prick that is clearly repeled by homosexuality. SO, if there was just a bit more respect and consideration for homosexuals in the mc's actions, it would have made the character 100000000 times better. But judging by his initial reactions and tone of the story, I bet there's going to be a lot of "laughs", then shock and cursing on MC's part about the ML sexuality coming out. Thus I don't expect any sort of character growth and the kind of mind set change I want to see happen

For instance it says the siblings aren't related by blood on the tag because I guess the MC is not blood related to the ML mentally. But, they are actually related biologically by half-blood since the MC did TRANSMIGRATE into the ML's half-brother, thus it is in*est.

Also in order to initiate obedience into the novel brother, the MC "spanks him". Spanking was accepted back in the day, but what time period did this guy come from? Spanking is still physical abuse, anyone who disagrees with this statement, look it up. So, I don't know when this guy came from, but I assume that he should be within this later decade so he should know that spanking is detrimental to a child. Maybe it's a culture thing in China still? Whatever I'm still peeved about this character's moral behaviour

To answer the question of reviewer, yes spanking is still being done in some parts of Asia. Asian countries are different to Western countries. There are some customs in Asian countries that are being pratice today that Westerners souldn't understand. The translator already explained it in their notes.

Anyways, MC was semi interesting, he had potential. But then he meets his half-brother, and then loses all his braincells and the tiny bit of personality he had. The MC basically becomes a brainless simp. He adores his brother, he pampers him, thinks about him all the time, is overly protective of him. And that's it. His entire personality is "isn't my brother cute? I love him and he's done no wrong, I'll always forgive him and will die for him" and for what? Why is he so deeply attached to the guy? All that is said is that the ML reminds him of his little bro from his past life, but he didn't even have a deep, loving relationship with him in the first place! I suppose, he could see the ML as a replacement, a better version of his gay sibling that he can successfully keep straight (gross) but even then it doesn't make much sense and feels forced. Basically, he has no real reason to be so obsessed with his step bro. It just doesn't come out as realistic. And when both the ML and him are adults and the MC doesn't have a crumb of character development beside "I love my cute brother", well how am I supposed to care about him? I legit stopped giving a f*ck about the guy near halfway through the story.

Now the ML. Well, he's nothing but an annoying edgelord for 25 chapters. Wasn't a fan. Constant eye-roll. Then he becomes interesting, does a complete 180 and turns full unhinged after coming to the conclusion that his older brother was put on earth to love and take care of him as a way to make up for his awful previous life. I like it. His change of personality felt a little too sudden, but that's OK. He's a cute kid who plays innocent in front of his brother but is secretly fcked up and possessive. THAT makes sense for this character, his obsession is believable (unlike the MC's obsession that came out of f*ckwhere).

But then he just... stays this way. Keeps acting innocent as a teenager, then as a young adult, and the MC keeps getting fooled by his act. All the background characters easily notice his weird dark obsession but never say anything? Not even a passing comment or trying to grab MC aside to talk about it? It's just too far-fetched and far from believable. You can't convince me NO ONE even thought about mentioning ML's obviously fkced up dark behavior to MC.

Anyways, the relationship between the main couple isn't great. No chemistry. Big bro MC is a one dimensional brocon, and little bro ML is a cold yandere. MC doesn't see his brother in a romantic way, and then he gets mol*sted but brushes it off? Then he gets r*ped (the scene itself is skipped but at that point, his body is completely paralyzed, and he never tells us if he gave consent, acting all regretful. He even beats up ML for doing it. BTW we don't even know if MC secretly liked it, if it was good, bad... It's the MC's first time with a man. But he has nothing to say about it. No info. Basically just "they did the do" and that was... underwhelming. I understand not wanting to write explicit smut but at least give us some info about how it went? Then, out of nowhere, he accepts to see his yandere bro as a romantic partner. He's like (and I'm not joking) "ok, you noncon'd me and I only see you as a brother but I accept. As long as we keep it secret cuz we're related" just wtf? Gee I can really feel the love through my screen. BTW idk why the ML doesn't simply reveal to the MC that they're not actually related. Wouldn't it solve everything? Not only would the MC feel better about their relationship, but they could do PDA outside and the ML is a yandere, so he SHOULD want that! He should jump on the opportunity to show off to the world that his lover is only his! But no. I guess it's just for plot convenience. Anyways their relationship is bland. Yawn.