Affinity

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**Affinity** (強化, *Kyōka*?, lit. "Strengthen") is the Quirk used by Chiba Rasen.

## Description

Affinity allows Chiba to increase his strength and reflexes by striking solid objects.

By activating his Quirk, Chiba can emit a glowing energy from his body. He can also emit it in a quirk burst before it stabilizes to an energy level he can manage. In order to show off his true skill with the Quirk, he has to effectively and successfully strike something with force to pass a threshold and increase his power.

Chiba measures his Quirk with what he calls "Calibers", the higher the Caliber, the more power he has. Training through his childhood and with Molpe Sira, he has further increased his physical skills and reaction time.

At record, he is able to reach roughly 22 Calibers. Which is a substantial increase, but difficult to achieve and maintain. Around Caliber 10, Chiba emits electrical sparks around his body, later on he can integrate this aspects into his attacks.

### Weaknesses

Chiba's prowess can increase easily, but just as easily can be lost. If he fails to make contact with anything or pass a threshold over a certain amount of time, energy will be dispersed and lost. This window of time shortens the higher his Caliber.

The energy produced by Chiba's quirk will naturally fluctuate without focus. The longer he keeps his Quirk active without much activity, energy will begin to deplete. Immense prolonged usage- regardless of gain or loss- will cause internal and external damage to his body, appearing random, but quickly. If he retains a high Caliber without change, his skin will seemingly tear and scar his body.

## Super Moves

* **Azure Spirit Unstoppable** (紺碧 精神 安無嶺過武瑠(アズレ スピリット アンストッパブル), *Azure Supiritto Ansutoppaburu*?): Chiba achieves his full power, maximizing speed and strength to his limit. This is more of a state than a supermove. Currently this is achieved at Caliber 20+.
* **Flying Raijin** (飛雷神, *Hiraishin*?): By activating his Quirk, Chiba uses a momentarily spike in energy to burst towards a direction. He’ll use this momentum to cover large distance in less than a second. If possible, he’ll kick his opponent once he’s close enough. He can use this again in a higher Caliber, but he'll revert by one Caliber after using it.
	+ **Flying Raijin - Thunderstorm** (飛雷神 雷雨, *Hiraishin: Riau*?): Chiba adapts the move to dash towards a group of targets at high speed. He'll then use a series of spinning attacks to hit each one that are in close proximity or are in the direction Chiba moves in. He'll revert two Calibers after using it.

**Raiken** (雷拳(らいけん), *****Raiken*****?): Chiba's personal adaption to his father's Kakuseiken, focusing on using multiple aspects of his Quirk with his attacks. At later stages of his Calibers, he'll infuse his attacks with electricity to attempt to stun his opponents. Though while it grants him a powerful arsenal, it has a dire cost to the body.

* + **Thundering Fist - Squall** (雷拳(らいけん) 突風(とっぷう), *Raiken Toppū*?): Chiba bolts around the opponent in an unpredictable pattern, then he'll perform a chopping motion towards the opponent's neck or shoulder.
	+ **Thundering Fist - Tempest** (雷拳(らいけん) 怒涛嵐(どとうらし), *Raiken Dotōrashi*?): Chiba jumps while spinning his body to build up momentum and delivers a devastating kick, the longer he spins around the more energy he'll transfer in the kick.
	+ **Thundering Fist - Echo** (雷拳(らいけん) 電光の響(エコー), *Raiken Ekō*?, lit. "Sound of Lightning"): Chiba feigns an attack and quickly shifts his position to strike again.
	+ **Thundering Fist - Lightning Sprite** (雷拳(らいけん) 稲妻 上昇刀(ライトニング・スプライト), *Raiken Raitoningu Supuraito*?, lit. "Lightning Rising Sword"): Chiba dodges his opponents attacks as he closes the distance between them to deliver a powerful uppercut.
	+ **Thundering Fist - Thunderbolt** (雷拳(らいけん) 稲妻 落下斧(サンダボールト), *Raiken Sandāboruto*?, lit. "Lightning Falling Axe"): Chiba approaches his opponent from either the side or above and performs a devastating axe kick.
* **Teikeigyo** (霆契霅(ていけいぎょう), *Teikeigyō*?, lit. "Lightning Promises Thunder"): Chiba’s Final Resort, by striking one of his hearts to stop it, he was able to jump to Caliber 25. Though with these conditions, he is very limited on what he can do, such as attacking once. He is capable of moving in a single direction at incredible speeds that covers a long distance. If he is able to successfully strike his target, the damage will delay for a few seconds before the pent-up energy is released and inflict massive damage. Chiba will collapse before this happens and would be unable to heal any damage that had taken place. During Chiba's original attempt, his body failed to properly control the energy and by consequence nearly killed him. His mother was able to use her Quirk to heal his damage heart, but couldn't do much about the scars left over. She states that if he tries this again she wouldn't be able to heal the heart he sacrifices.

## Relative Quirks

* Metsushin Rasen (Father)
	+ Night Oni
* Kunihime Rasen (Mother)
	+ Amplify
* Yotei Rasen (Brother)
	+ Super Gravity
* Kojin Rasen (Brother)
	+ Amaterasu

## Trivia

* Chiba's "Azure Spirit Unstoppable" move is a reference to the canon move "Red Riot Unbreakable" by the character Eijiro Kirishima.
* Chiba's "Flying Raijin" move is named after the "Flying Thunder God Technique" from the anime, Naruto Shippuden.
* Chiba's "Thundering Fist" series are named after or relate to storms.

## External Links

* Affinity - Wiki article about the concept of Affinity, which serves as its name.
* Combo Empowerment - Wiki article about the process of Affinity was based after.