It seems that playing around the options you can evade the bug that made the game to (sometimes) crash after the third king
https://steamcommunity.com/app/390310/discussions/0/350542145703818295/
In this post, the user GIno The Man has found a solution
basically change the game to english if not already so, and select the options 'skip movies' annd 30 fps.
After you have watched the conversation with the sage, you can save the game exit and change the options again.