[@Geyter]

[quote=@Geyter]
[@JackDLemmy] Alright. From what I get from the fruit is that it's similar to Kidd's, but instead of manipulating electromagnetism, it's more of the concept of magnetism. The idea in itself is fine for now.

The nerfs and conditions I was previously taking about would involve it's area of effect (AoE) and on how it's activated.

For it's AoE, I'll limit it to single objects. So basic hand held weapons, cannon balls, then large rocks at most. Charging up an average sized person would be difficult and take a significant amount of time. The stronger you get, the larger the objects it can affect. Eventually you'd get to charge up larger areas such as land.

The conditions I was talking about would be how you would trigger the charge. You'd require physical touch. At present, it would definitely limit what you can do, but that's the point.

A good reference point would be Shiki and his Levitation Fruit. It's very similar to what you want. However, instead of electromagnetism with pushing/pulling, it's just manipulating the things he levitates. The area he effects is incredibly massive, affecting entire islands.

Anyway, that's about it. Physical contact let's you assign a neutral charge. No technique needed. Changing it either positive or negative requires techniques.

Also, what do you mean regarding your mentions on kinetic energy?
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I'm sorry.  I'm a bit confused by the first part.  What did you mean by the concept of magnetism?  I could've been mistaken but I thought that an item have a positive or negative charge was what caused electrons and protons to be pulled/ repelled, which was what electromagnetism was?  (I haven't really studied much on physics so I'm really curious.) 

I'm fine with a single item at the moment, to start with, but would that carry out through the character's advancement with the devil fruit? 

I'm completely fine with a charge being limited to small objects to start with.

Requiring physical touch works too.

Well kinetic energy is movement.  Normally if someone hits someone else the force of the blow actually disperses equally between the two parties.  The issue with that is my character isn't physically strong and so if she were to use the ability, later one when heavier power came into play, she'd pull a deku and her arm would be smashed into pieces.  So by adding the stipulation that force moves into the positive charge it makes it so any damage to her would be mitigated.  Also put the thing it the neutral charge so she could put it on herself as a way to lower damage taken from blows she hasn't been able to put a charge on.