Magic

Magic
TBA

Magestones
Stones that contain magic and can be used to power magical artifacts such as the chandeliers used in Night Raven College, or by mages to control their magic use so they don't overblot as easily.

Magic Pen
Students at Night Raven College are issued a magestone that is attached to a magic pen that they use to facilitate their magic use.

Night Raven College's outfits all contain pockets for their students to easily carry their magic pens, with the exception of their ceremonial robes that instead have a key-shaped carrier for the pens attached to their waist.

Unique Magic
A Unique Magic (Signature Spell in EN) is a spell distinctive to the caster. It is developed subconsciously and likely used on instinct the first time, as seen with Deuce's first time using his unique magic. The name of the spell is also not consciously picked by the caster.

Blot
Blot is an ink-like substance created as a byproduct of magic use. The amount of blot created by a spell is influenced by a person's emotions, with negative emotions like anger, fear, and sadness causing more blot to be created. Blot will accumulate inside the caster of a spell unless a caster is using a magestone, allowing the blot to accumulate inside the magestone instead. Every person has a natural amount of blot they can tolerate on their own and this amount generally does not increase or decrease with the amount of mana a user has. Blot naturally fades with rest and self-care. If the amount of blot accumulated inside the caster exceeds their blot tolerance, overblot occurs.

Overblot
Overblot is a negative state that occurs if a wizard overuses their magic leading them to "blot" accumulation exceeding their magestones. During overblot, Phantoms are created to drain the user of all their magic, leading to their death.
 * In Episode 6, the Shroud family curse incinerates blot as it accumulates. They have to keep producing blot or else it will consume their magic in order to stay alive. Due to that, they will lose the ability to use magic if they can't produce blot or isn't within close proximity of blot in general. The Shroud family curse is also not immune if they are in an area filled with an overabundance of blot that not even having a support item could offset it, and being dragged to Tartarus and surrounded by a lot of blot, leading a Shroud family member to overblot.
 * In Episode of Heartslabyul, it was shown that one of the side effects of overblotting is the victim starts leaking black inks from their head as they kept overusing their magic to corrupt them further.