Barrier Magic

**Barrier Magic** (結界魔法, *Kekkai Mahō*) is an advanced form of Security Magic that allows the caster to create and control magical barriers called **Bounded Fields** (結界, *Kekkai*).

## Summary

Barrier Magic is a topographic type of advanced Security Magic that consists in knitting a network of magical energy and spreading it on base area, such as a piece of land or a building, to create a mystic boundary line that separates the inside from the outside.

## Characteristics

By definition, it should not be possible to move Bounded Fields once they are constructed, as the established boundary line will delimit the range of the powers of the Bounded Field, though it is possible to engrave magic sigils across the interior of the barrier to expand the area of effect and strengthen it.

Removal of the sigils by a third party is possible as long as the technique used to engrave them isn’t too advanced. In this case, it is only possible to temporarily hinder the Bounded Field by dissipating the magical energy used to activate it, but the creator of the Bounded Field can amend this by simply putting more magical energy back into it.

As their original purpose was for the creation of safe havens, the effects that can be set within a Bounded Field are in their majority those whose aim is to protect the caster. Offensive variants do exist, but as they work through indirect magical interference, their efficiency against those who can protect themselves magically is low. Advanced Bounded Fields work on a subconscious level to prevent onlookers from noticing it, but placing those on a large area increases the chances of being detected by trained magic practitioners or certain Phantasmal Beasts.

An ideal Bounded Field is one that cannot be detected by anybody. On the other hand, a Bounded Field that can be easily noticed is seen as the mark of a faulty magic practitioner.

## Techniques

### Magical Workshop

**Magical Workshop** (魔術工房, *Majutsu Kōbō*) are territories created by magic practitioners for the purpose of the practicing magic. They can be set structures with the purpose of being developed to suit the caster's family's abilities or a temporary space within which to best establish a caster's crafts.

A Workshop is something a caster created after years, decades, generations of labor, described by some to be an "artificial world". All Workshops are protected under wards to prevent leaking magical energy and to hide their presence.

Many casters prefer to have their Workshops either underground or at the highest possible point. It is a difference on whether you want to channel the power of the Earth or the power of the Heavens.

### Reality Marble

**Reality Marble** (固有結界(リアリティ・マーブル), *Riariti Māburu*) are special Bounded Fields that center around the materialization and projection of one's inner world onto reality. Only magic practitioners who have dedicated their entire life to perfect their Barrier Magic, and as such, Reality Marbles represent the pinnacle of all Bounded Fields where the boundary line becomes the space itself.

## Trivia

* The technique of using a large area in the wilderness as a Workshop is an old tradition in Europe.
* According to Odin, the nature of Barrier Magic is heavily tied to the mechanics of the Phases and Cosmos, though it's never really explained in what ways they are connected.