Netsu Netsu no Mi in One Piece

As the fruit hasn't yet been shown in the anime, we don't know a lot about its appearance.

The user is capable of heating different parts of their body to a high temperature that a normal human couldn't stand. This helps in confronting their enemies. They can even have their heat on other objects. They can even transfer heat without even physical contact.

This devil fruit is ineffective against enemies who can have high resistance to heat. Other than that standard devil fruit weakness that other devil fruit users have, i.e. that they cannot swim.

Oven uses his devil fruit powers in combat as he transfers heat to other people's weapons and makes it too hot for them to hold or even their clothes. In order to damage his opponents quickly, Oven transfers heat to them via eye contact to set them ablaze at will. This fruit's effect can affect even water. Oven can boil up the the ocean water to a point where it starts damaging the ship.

The techniques used by Charlotte Oven are:

Nekkai Jigoku

In this technique, Oven heats his hands up and submerges them in the ocean and boils it up to damage the ships.

Heat Denasshi

In this technique, Oven heats up his forearms and throws punches at his enemies at tremendous power.

Heat Match Guy

In this technique, Oven attacks with his whole body at high temperature and attacks from her enemies.

Heat Goat

In this technique, Oven heats his head up and then he tackles his opponents.

Q. What does Netsu mean?

A. Netsu in Japanese translates to heat.

Q. What is the Netsu Netsu no Mi X factor?

A. This is one of the few Devil Fruits shown to be able to interact with seawater without the user suffering from the nullification of his Devil Fruit power.