I chose to write the book myself in the ending, and the animation presents as that I fly higher and higher, and when the animation ends, I fell down and it
takes about 30 points from each group member. What does that mean? Is this
ending worse than tearing off a page of the book?

Although I've played dozens of parties, I've only actually finished the game three times - once with each of the endings. Personally, I dont feel any one is better than the others.

I dont remember falling and taking damage, but I dont see that it's relevant either. I mean, the game's over right?

And really, the feeling that it's over is exactly why I've taken so few parties to the end - I dont want it to be over!

A bug. The same thing sometimes happenes when you destroy the Savant Ship.

personally i think tearing out the page is best ending cause... well you will need to find out.

and the same thing happened to me after i asended. and it seemed like i kept taking damage after that. but thats no big deal is it?