What is the best power system in anime?

Behind every good fight is a rulebook: what powers cost, who can learn them, and what happens when someone finds a loophole. Which system holds up best once you read the fine print?

1

Devil Fruits

One Piece: eat one, gain an absurd power, never swim again.

2

Chakra and Jutsu

Naruto: hand signs, elemental affinities and a shinobi class system built on both.

3

Zanpakuto and Bankai

Bleach: every sword has a name, a personality and a second release.

4

Nen

Hunter x Hunter: six categories, hard rules, and conditions that punish greed.

5

Stands

JoJo's Bizarre Adventure: a fighting spirit shaped by its user's personality.

6

Alchemy and Equivalent Exchange

Fullmetal Alchemist: every gain has to be paid for in matching material.

7

Quirks

My Hero Academia: 80% of people are born with one, and society reorganised around them.

8

Cursed Energy

Jujutsu Kaisen: negative emotion turned into a weapon, with binding vows as the fine print.

9

Breathing Styles

Demon Slayer: human lungs and forms as the only answer to demons.

10

Ki

Dragon Ball: life energy you can sense, fire, fly with and endlessly escalate.

11

Titan Powers

Attack on Titan: nine inherited titans on a thirteen-year clock.

12

Magic and Mana Zones

Black Clover: grimoires, elemental affinities and the sheer size of a mana pool.

13

Geass

Code Geass: one absolute command per person, and a user who runs out of people.

14

Death Note Rules

Death Note: a notebook, a name, a face and a rulebook that reads like a legal contract.

15

Spiral Power

Gurren Lagann: determination as literal fuel, scaling until it embarrasses physics.