God of sword
His final and the hardest of the tempering which is spine, was complete, and he didn't knew about it, he was amazed, and daze for couple of minute.
After being daze for couple of times Theo muttered to himself," i guess, the black gu substances that came out of the body must be the impure substances after completing the basic tempering, i read that from that old book, so that old book isn't useless at all", after saying that to himself, he start, muttering to himself again," isn't the black gu substances comes out when i complete why body tempering,". Theo was confused.