Why not unseal Ioroi :(

I just started the new Inazuma quest and read Ioroi’s first encounter description. Why is he still sealed after centuries even though he seems like a good person. Like nobody even cares that he’s sealed in stone, not even his children. I got so sad that I looked up his backstory, and he deserves to be free! Legit can’t even continue with the quest, it’s just so sad that he can’t come to the festival. Somebody call Venti 😭