Personally, I think the chain is not easy to use and should be changed as soon as possible. I remember a bitter man called the sun, the moon and the meteor, and the+force was ok.

There is a malicious person in the chain, and I don't remember his name. You can go to the last script to see what his name is and what his cave entrance is, in Nara town. Musashi Miyamoto has his plot.

If you want to learn, you'd better master a sword first, then get a seal, then defeat the person you want to learn and take him as an apprentice, and then you can learn from him.