Why Did Zenitsu Become a Demon Slayer?

Zenitsu explains that he must get married before his next mission, because he might die; he asks Tanjiro to protect him until he gets married. Tanjiro asks him why he became a Demon Slayer. Zenitsu got swindled by a woman, and racked up debt. An old man paid off his debt, and trained him.

What is wrong with Zenitsu Demon Slayer?

Zenitsu is shown to be incompetent and slow learner, but he's also shown to be loyal to his friends. One of his worst character traits is how he harasses any and every woman who gives him the slightest of attention, making him a creep and a stalker.

What does Zenitsu suffer from?

This also causes panic disorder, which causes you to pass out or sleep whenever your fear level reaches the limit, as a method of defense. Mostly, it is known as the stress napBut the strange quirk of Zenitsu is that when this happens he becomes sleepwalking and acts like someone else in this state of mind.