Barrier Magic (バリアの魔法 Baria no Mahō) is a Caster Type Magic.
Barrier Magic allows the user to manifest or transform an user their magic in forms of barriers, shields and walls in order to defend themselves from opponents and their magical prowess. Alternatively, Barrier magic can also be used for offensive purposes. Focused magical energy formed into a solid form of energy. This energy can take on many shapes or colors as determined by the user. Barriers are protective in nature, and can be as simple as a barrier only protecting one direction or encompassing all sides of an area. Barriers can be used for containment, and some barriers can be used offensively. Barriers can mask spiritual pressure and can make one spiritually and physically invisible. The strength of a barrier is dependent upon the power of the user. Weak barriers are easily breakable, while strong ones can last for centuries. Barriers created by noble blood are said to be unbreakable by those of lesser status. Certain barriers can be placed beforehand and activated later, while others require certain artifacts and time to activate.
- Lightning Quadrilateral (雷光四角形, Rikō Shikakukei): This technique seals and locks away a person. Before it is invoked, four spears are used to trap the target by their hands and legs. Once invoked, the target rises up into the sky and is then sealed in a black coffin-like box with chains wrapping around it. The four spears then pierce the box all at once. It is seemingly able to keep a person sealed for several years.
- Santai (三諦, Santai): A defensive wall is created to protect against an enemy's attack. The practitioner creates a translucent barrier in the form of a large rectangular wall. This technique has shown the ability to block attacks of two S-rank mages at once.
- Severing of Connections (縁切り, Enkiri): One of the strongest barrier techniques.