Demon Cinder Castle (シンデル魔城, Shinderu Majō) is an abandoned castle where the Witch Angela Leon lives peacefully with her bodyguard 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 wants Angela's soul from getting inside. However, the castle is only seen in the prologue of the series when Al Capone and his men tries to infiltrate it, and later when Black☆Star and Tsubaki Nakatsukasa come to find Angela. After Angela and Mifune join Arachnophobia, the castle is likely abandoned.