
yeah, I understand that his initial intention was probably as a sample for invitro. But either way, the artificial womb was planted inside his own body. So, however means he got the sperm, the fertilized egg will end up inside him. Say, he got it via invitro, then he should somehow think of a possibility for success, and not just laugh it off as if it is entirely impossible. (Sorry for the scientific reproductive terms it's just that this manhwa is all about scientific stuff and I just had to lol)
(lil bit of spoiler from Ch 26: oh well he said sorry because it has been a year since he planted that thing inside him so he forgot about it)

I get it, it's a world that's very similar irl, so mpreg isn't a thing yet. That's why he started that egg project. If we reread Ch 1, Sunwoo said "he was hoping to get pregnant with the help of that egg". It's just weird that he was hoping before, and now he didn't think it will work like that. Really, unusual situations could bring unexpected reactions.

https://www.mangago.zone/home/mangatopic/16224012/
sorry for not answering your question directly. if we rephrase your question, you're asking for the link to the raws, which I already answered in that topic link above.
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I actually find it weird that he's laughing it off like that and acts as if he forgot about his artificial womb when he had been asking for sperm nonstop all this time?? so why are you asking for sperm then? silly airhead