Su Jingyan × Su Jingnian
Su Jingyan is the eldest brother in power of the Su family. He is cold, paranoid and duplicitous. When he was young, he said "homosexuals are disgusting" and it became a sharp knife that stabbed him personally.
Su Jingnian suffered from heart failure, and the doctor declared that she did not have much time left. Su Jingyan used freedom as a bargaining chip, just asking for a heart to extend his life; Su Jingnian would rather die than accept it, and would rather step out of the door than trade his brother's life.
In the end, Su Jingyan broke her promise. He didn't get his brother's forgiveness, he only got his own death. Every word in the suicide note is gentle, and every sentence is heart-piercing.
Concept: Friendship between brothers