Can you recommend some fantasy novels that focus on brotherhood or master-disciple relationships?

Let me recommend a few fantasy novels with brotherhood or master-disciple relationship as the main line to you. I hope you will like it ~ 1. "Ling Tian Battles the Nine Heavens" was about brotherhood. The story of the younger brother working hard to protect the older brother. The plot was compact and exciting, and the brothers were deeply moved. 2. There was also a strong master-disciple relationship in Invincible Sword Soul. The protagonist learned from his master, and his master guided him out of his predicament and became a sword god. It was touching. 3. The brotherhood in "War God" was so touching that it brought tears to one's eyes. The friendship between the protagonist and his brother transcended life and death, conscience, and interests. It was truly touching. The above is my personal recommendation. I sincerely hope you like it ~