Did Zenitsu marry Nezuko in the manga?

No, Nezuko doesn't marry Zenitsu in the manga.

No, they don't. There's no such plotline in the manga.

In the manga, Zenitsu and Nezuko have an interesting interaction. Zenitsu is charmed by Nezuko's cuteness and tries to protect her. Their relationship adds a lighthearted element to the story.

Definitely not. The story doesn't depict Zenitsu and Nezuko as a couple. Their paths in the manga are more about their individual quests and battles against evil.

Zenitsu is infatuated with Nezuko in the manga. However, Nezuko's main priority is her brother and defeating demons. Their relationship doesn't develop much beyond Zenitsu's feelings.

They have a rather complicated relationship. Nezuko is protective of her brother and Zenitsu has a crush on Nezuko, but their interactions are not straightforward.

In the manga, Nezuko and Zenitsu's connection is sort of one-sided. Zenitsu is smitten with Nezuko, but Nezuko is mainly focused on her family and her quest. Their interactions are few but memorable.

A simple Nezuko and Zenitsu fanfiction could be that they go on a journey together. Along the way, they encounter other demon slayers who are initially skeptical of Nezuko. But Zenitsu stands up for her, explaining that she's different. This shows the depth of their friendship and how Zenitsu has come to trust Nezuko completely.

A Nezuko and Zenitsu fanfiction might explore the concept of Zenitsu teaching Nezuko about the human world. Since Nezuko has been a demon for a while, she may have forgotten some aspects of human life. Zenitsu could show her simple things like how to enjoy a flower's beauty or the taste of human food (in a non - harmful way for her). This could create a really sweet and heartwarming story as they bond over these new experiences.

One common theme is protection. Since Nezuko is a demon and Zenitsu is a demon slayer, there are often stories about Zenitsu vowing to protect Nezuko from other demon slayers or more dangerous demons. Another theme is friendship. They develop a unique bond in the original story, and fanfics often explore that further, like how they support each other through tough times. And of course, there can be a bit of a romantic undertone in some fanfics as well.