Magic Castle Cinder (シンデル魔城 Shinderu Majou in Japanese), known as Demon Castle Cinder in the English version, is an old abandoned castle and the Witch Angela's lair and the place where she lives peacefully with Mifune after he rescues her from mafia groups who wanted her Witch Soul. Mifune always guards the entrance to the castle to prevent anyone who wanted Angela's soul from getting inside. However, the castle is only seen in the Prologue of the series when Alcapone and his men tries to infiltrate it, and later when Black Star and Tsubaki come to find Angela. After Angela and Mifune join Arachnophobia, the castle is likely abandoned.
Magic Castle Cinder is located on top of a tall rocky mountain and is the size of an ordinary castle, being quite big and made of stone, but its appearance resembles a cartoon-like castle from a children's storybook, befitting the fact that its inhabitant, Angela, is only a child. In the anime, it has one profound tower protruding from the main structure that has two yellow leering eyes on it, with a red conical roof. In the manga, the castle looks a little more menacing, with multiple pairs of leering eyes emblazoned on the towers, which are more abundant than in its anime counterpart. The most prominent feature of the castle is the large green stone chameleon head protruding from the centre of the castle, facing outwards. This matches Angela's animal theme. The chameleon has its tongue out. In the anime, it is set dead straight, but in the manga, the head is tilted slightly, and has a crack going through half of its face.
In front of the castle, there is a large stone-paved area, with various eroded and broken pillars. This is where Mifune dispatches anyone approaching the castle looking for Angela's soul. The pillars are quite useful as they provide places for Mifune to wind his 'Keep Out' tape around, enclosing the area and encircling the enemy. Following the stone-paved area is the entrance to the castle, a closed gate with Mifune's 'Keep Out' tape on it. Mifune frequently stands guard besides the entrance.
In the manga, several wispy dragon-like creatures are seen flying around the castle's spires.
Part in the Story
|“||So, Alcapone. What could possibly bring a dirty mob boss like yourself to this castle? And if I don't like your answer, you die.||”|
—Mifune, Episode 2
Magic Castle Cinder is where Mifune and Angela are first introduced, the castle being a refuge for Angela, since she is still a defenseless child. Mifune guards the castle, protecting her from anyone trying to take her soul. It also serves as a battleground for the first fight between Black Star and Mifune.
The castle is first approached by Alcapone and his men, searching for Angela's soul for power. The Evil humans confront Mifune guarding the entrance and try to kill him. Mifune dispatches them all easily, but is quickly confronted by Black Star and Tsubaki later on, who are also after Angela's Witch Soul in order to make Tsubaki a Death Scythe. Black Star challenges Mifune to a fight, and Mifune uses his Infinite One-Sword Style, scattering his swords all over the grounds of Magic Castle Cinder and enclosing the three with his 'Keep Out' tape.
After a rather intense fight, Black Star manages to use his assassination skills to deliver a finishing blow to Mifune, and defeats him. However, upon interrogating him, Angela appears to try to protect Mifune. Realizing that the Witch he is supposed to kill is a mere child, Black Star decides not to kill her, and leaves Mifune and Angela in peace.
Magic Castle Cinder is not seen again in the series. It is probable to assume that after Mifune and Angela joined Arachnophobia, the castle was abandoned.
- The castle's name may derive from the character from the famous children's fairy tale, Cinderella. However, it could be interpreted in a different way, as the Japanese pronunciation for the word 'Cinder' (shinderu) sounds the same as the phrase 'dying.'