It's just a lot of the same things with these types of novels. If you know what it copies then the plot is very easy to guess. (since there are like 10 of these).
I read expecting the Chat Group to be important. But the Chat Group end up being only a small part of the story. It mostly just focus on Journey to the west. Which make me wonder why the author even bother to add in Chat Group if he not going to used it at all in a meaningful way.
My one problem with it is that the game part is so poorly developed, why even bother making the mc know the future if he never actually used it for any benefits (except one time).
Don’t read mtl of this or you will be very confused. Have a good start and middle, but if you don’t know or like fgo then later at the Lostbelt arc the story would just feel like it drags on for too long. Great ending though.