The first incense was a Japanese novel by Keigo Higashino. The main characters in this novel were: 1. Bai Yexing: The male lead is a cold, lonely, and intelligent person who is very indifferent to feelings, but deep inside, he also has unspeakable feelings. 2. Yukisui: The female protagonist is a smart, witty, and independent girl who has a complicated relationship with Bai Yexing. On the surface, she seems to be with Bai Yexing, but in fact, she has a deep hatred for Bai Yexing. 3 Ryoji: The replacement for the male lead, Bai Yexing, is a very kind and loyal person who would give up everything for Bai Yexing, but deep down, he also has unspeakable pain and sadness. 4. Other characters: There are some other characters such as Miyuki, Nishino, Kagami, etc. They have different degrees of relationship with Bai Yexing and Yukiho. Bai Yexing and Yukiho were both contradictory and complicated characters. Deep in their hearts, there were many unknown emotions and thoughts. Ryoji was their core character. He was a loyal, kind, and brave character. His existence made Bai Yexing and Yukiho even more complicated and charming.