It looks like that tail(?) is binding you to the book.

As long as it stays there, the seal will remain.

I'll end up being enlightened.

Aren't you having fun?

Although from the magic formula I found, I think I should be able to remove the seal, but...

I don't want to involve myself in this if possible.

I can't say for sure that I won't get involved in something troublesome,

and I'm not even sure what kind of character that girl is....