If I were to describe this manhwa,
It would be that this is exactly what readers want to happen when they read a tragic back story.
This isn't a revenge story, this is THE Revenge story
I saw some comments saying how the box was manipulated or something, but I'm pretty sure that the reason our mc didn't get a rune is because the box is meant to give users control over their magic, and since our mc already had full control over their magic the box couldn't put a rune.
I'm also...