No that guy hate MC.
(Potentials spoilers)
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he kinda hate the whole family because his father left his mother to die (the brothers have a different mother) and hate his brother mostly because he consider him more privileged then him. But he’s totally working to win over his father as revenge and the only reason he doesn’t like the doc is because he doesn’t want his brother to get better. He want MC to fuck up and stay down...
The RAW series is not completed....
i’m Think there will be a sort of happy ending but it’s gonna get worse before it get better for sure.
(Spoiler maybe)
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Mc think he killed his mother but from what I saw the father did it... This series is pretty psychological so it may trigger people a lot. I’m in for the wild ride lol.
Found it on this website
https://newtoki88.com/webtoon/2945202/3의-시선?toon=BL%2FGL

His stepbrother is a good guy or not? I'm baffled