
Gaahh they didn't show his transformation. Apparently it is painful because of the wound

You're right, but without the transformation scene, I don't think manhwa readers will understand how much pain Heesung went through just to get back to his hyung. Maybe they'll mention it next chapter though. I've noticed that they'll sometimes add in details from the novel a little later than in the manhwa.
When the brother ask when tiel birthday the he be like: oh no, that is tiel's mother....
Bro that is your mother too
I feel like they should make her birthday the day she came to asterian