Exponential Boost

**Exponential Boost** (指数ブースト) is an old quirk, seemingly one of the first in the world. It was unusually powerful despite its generation.

## Description

The quirk stores energy at an exponential rate. This energy can then be distributed into another person, boosting the physical and quirk based capabilities of said person. The boost builds energy quite slowly at first, at a rate of 2^(0.2x) with the unit of measurement being the max strength of the affected quirk. This balances the capabilities of the quirk, making it so that any boost given within a short time frame, while helpful, is still insignificant. The user can also boost themselves, but as there body has built an immunity to the stored energy, allowing for its storage, the user only receives about half of what should have been gifted in the boost. The user in this boosted state is still capable, but weak in comparison to quirks like that of OFA or other strength based quirks. What is interesting about the user boosting themselves though, is that it seemingly lasts much longer than that of another person being boosted, and that may be due to the resistance to there own quirk witch they have built up. While another person is boosted, they take no damage from there own quirk, but instead, any such damage will be translated upon the user of Exponential Boost. The energy that boosts the capabilities of whoever is boosted is incredibly volatile.

### Strengths

Exponential boost can majorly increase the capabilities of most anyone. These then boosted quirks are incredibly potent, and does no known damage to the user of the Buffed Quirk. Furthermore, the voltaic energy that is used to buff the quirk arcs out from the boosted quirk user, leading to an effect similar to that of OFA when at full power. These arcs can and will do minor damage to the surrounding area, but are mostly used to siphon off heat produced by the usage of quirks, especially within a boosted state. The user of Exponential Boost can buff themselves for an extended period of time, longer than the boost received by others.

### Weaknesses

The user takes all the damage of the user of the boosted quirk, proportional to how much damage the boosted quirk user would have taken from their boosted quirk. It can only boost quirks with loose set rules. Quirks like Time Stop, which don't have any direct way to increase power will not receive the benefits of the boost. Quirks like Taken Will will only receive boosts to range or similar limitations, and quirks like One For All will receive a direct boost to strength. The boost will only last 5 minutes, meaning it needs to be used to either end a fight quickly, or finish a fight that has been going on. The user can only buff themselves up to half capacity of what would be given to those boosted by the quirk.

## Awakening

If the quirk were to awaken, it would either allow for an increased rate of growth within the quirk, or for the user to transfer the voltaic energy into portions of there body or the air for quick, but costly use.

## Limitations and Side Effects

The Quirk Boost is limited to 5 minutes for boosted individual other than the user, who has a much longer period of time. The user only gains half the benefits of the buff. The user of Exponential Boost takes on any damage the boosted quirk user would have received.

Boosted Quirk Users will often have volatile energy stored within themselves. Upon activation of their quirk, the volatile energy will often be released, similar to the arcing released by Izuku Midoriya when using One For All.

When Exponential Boost is active, both the user, and those afflicted by it share a trait of Golden Colored Eyes, often times glowing as they to will release the volatile energy, at least on the afflicted users part.

## Trivia

* This quirk is based on a shower thought of what happens if two booster quirks start boosting each other with their then boosted quirks allowing for infinite increase in boost strength.
* The way the quirk works is quite similar to Eri's quirk, in that it accumulates energy, or boosts in this situation, and expends it all at once.
* Anyone who uses this quirk is in incredible danger as this will probably be the single most powerful SUPPORT quirk. AFO would really, really want this.