As soon as the demon passed out, Astaroth turned his head to Geminae.
"You. Come here. I need your help with something."
Geminae nodded, keeping silent.
The truth was that Astaroth had no idea how to seal anything. He wasn't versed in sealing techniques or even half decent in runic language.
Which was why he was asking Geminae for help.
"Help me seal this flame on the demon's head. I don't know how to do it."
Geminae seemed confused about Astaroth's chain of actions.
First, he powered up the demon, which was a terrible idea in his mind. Then he knocked him out and wanted to seal away a part of its power.
Why power him up if he was going to seal away his power anyway? He could have just let him die.
Seeing his confused face, Astaroth sighed in annoyance.
"Stop dawdling there and help me. I don't have all day. I have shit to do outside of here."