The saying "a broken clock is right twice a day" fits this situation. Unless you just don't answer anything, for most tests getting a 0 is as difficult as getting 100%. If it's multiple choice, it might even be harder than getting 100%.
https://www.lfg.co/page/1/
Nearly all the archive links are broken, so book jumping is difficult, and navigating the spin-offs are annoying, but the series is still readable.
Your assumptions fall a bit short; both sides are not against it. Prince Alfort is a pushover and only fears for his life. His mother, fearing Tillia will kill Alfort, intends to make him a puppet King and convinced the former King to name him King in his will. Alfort has 0 say in this decision...