I haven't come across a Chinese novel that is clearly centered around the phrase 'you have guts'. Chinese novels cover a wide range of themes, from love and family to war and adventure. While courage is a common trait in many novels, there may not be one that is so simply named or themed as 'you have guts'.
Here are a few novels that I recommend:
"Life Arrives at the Station": The most simple feeling a mortal has towards life is the fear of death. Whether it is failure, poverty, or the peak of success, the journey of life will reach the end, and the result will be the same.
[To Alive in the End of the World: Catching up with the end of the world on the first day of the New Year?] What a sad story! No, what's sadder than this is that I still have to live. The sadder story than living is that I have a daughter who is just one month old.
"Unforgettable Sea": In a relationship, happiness and happiness are always so short, while sadness is always very long. It seems that this is the true meaning of love.
I hope you like this fairy's recommendation. Muah ~😗
Guts is purely fictional. It's a concept or character that exists within the realm of imagination and creative storytelling rather than being based on reality.
Perhaps in this fanfic, Griffith has turned into something truly evil and a threat to the world Guts cares about. Guts, being the warrior he is, might feel it's his duty to put an end to Griffith to save others. Also, Guts could be driven by his own sense of justice. If Griffith has wronged innocent people, Guts may decide that killing him is the only way to set things right.