I don't know if this is real, but I just read another manhwa and found out it looks like noblesse. When I read the ending of the manhwa I found out that there is m24. I searched this on wiki but couldn't found anything about m24 brother.
The body is alike, almost the same but the face isn't shown.
The mc said it was his brother and he remembered.
And lastly there's union too in the comic. Modified human are the subject of the experiment there too.
This is from a series called Alpha, it's a prequel series to Noblesse. Yes, the main character is M-24's brother. Unfortunately due to poor reception (mainly because of the Noblesse ending), the series was cancelled after only 20 chapters.
We're adding pages and updating this site daily, since there's going to be a Noblesse anime coming soon. Once we've completed updating the existing pages, we'll focus on the Noblesse spin-offs. If you want more information, you can join our Discord.