
It's good but it has SA scenes with mc and ml. The story is interesting and the plot is great. The art gets better in the latest chapters. Since the ml is a lunatic, I try to ignore the SA and confinement for the sake of the story. But, I wouldn't recommend it someone who may not be able to handle these topics.

passion and codename have similar plots in that there's a competent mc who attracts the attention of a very dangerous person who uses disproportionate violence to solve issues or overcome obstacles. the mc is still competent and gets out of some scrapes but sometimes gets overwhelmed by the ml because the ml is just that dangerous to handle.
passion is intriguing as a story because (spoilers but fairly high level) 1) ilay gets really obsessed/attached to taeui and the narrative focuses on the way he reacts to taeui rejecting and/or accepting him, which is a big plus in terms of character dynamics 2) ilay has the upper hand in physical strength but taeui has the upper hand in their relationship 3) taeui's no 1 most important person isn't ilay, but his twin brother jaeui which is a nice change from the usual "romantic relationships are always the most important" route
I've only read codename up to the point where the manhwa is updated on this site (i.e., start of season 2) and it shares some similarities to passion but... to me it falls flat in comparison. the whole overarching plot around whatever they're trying to find feels like a backdrop to the relationship of the two main characters, which is fine, but the relationship of the two main characters just isn't portrayed in an interesting way. zhenya doesn't seem especially curious or attracted to taekjoo in any meaningful way - he's just "interested" because "the plot says so".
codename might also suffer from a worse manhwa adaptation compared to passion. the pacing is choppy, it feels like it's going through the major story beats of the novel but without bothering with fleshing out the characters' relationships. artstyle-wise, ilay looks far more striking than zhenya, who looks dimunitive in his fur coat in the earlier chapters.
tl;dr passion better than codename
Is Passion (yaoi) good?