The reason why Nezuko and Zenitsu are together in "Demon Slayer: Kimetsu no Yaiba" is because Zenitsu's own character is quite good.

From the beginning, it can be said that my wife Zenitsu is the most unreliable one. He is the most timid when talking and the most afraid of things. Fighting is like running away. It can be said that he has been laughed at by Inosuke many times because of this problem.

However, as the story develops, Zenitsu, my wife, keeps moving forward and making progress. Until the end, the Infinite City Battle, he even accomplished a feat that Tanjiro had not accomplished. One person brushed and wound the string alone. This is something that only the top genius Muichiro can do.

Character traits of Zenitsu:

Zenitsu is very timid and cowardly. He thinks that he is going to die soon. Therefore, in order not to die alone, he often He pesters girls to marry him. She has a kind heart and will stand up for her friends and girls. She fell in love with Kamado Nezuko at first sight after seeing her.

He is quite fascinated by girls, but he is often disgusted by girls because he is too entangled, and Nezuko, who is a ghost, is no exception. Although he is usually cowardly and selfish and asks those around him to protect him, in times of crisis he will stand up and actively protect his children and friends. He is a gentle person.

Having no confidence in his ability as a swordsman, he is afraid and avoids fighting ghosts. However, when the tension reaches the extreme, it will fall asleep and enter a semi-awake state, displaying its original powerful strength. After learning that "Grandpa" committed seppuku because his senior brother Yue Yue turned into a ghost, Zenitsu suddenly realized that through hard practice, he could exert his strength even in a sober state.