Kurikaramaru

is a yōkai sword wielded by the quarter-demon Moroha.

Trivia

 * The Kurikaramaru is the only sword in the series with the suffix -maru, which is generally applied to demons (such as Sesshōmaru), young samurai (such as Takemaru), or ships.
 * The Kurikaramaru is the only name in the series which uses more than three kanji.
 * Unlike other swords in the series, whose names are much more straightforward, the five kanji in Kurikaramaru translate mostly as nonsense. It could be that Rumiko Takahashi chose the name based on a reference to a japanese mythical sword named Kurikara(倶利伽羅) instead of naming the sword. The name of the mythical sword was historically borrowed phonetically into Japanese from Asian myths where the sword is known as Kulikah due to which the kanji chosen are not particularly meaningful.
 * The Kurikara-ken(倶利伽羅剣) is a famous sword in Japanese mythology being the name of the double-edged vajra sword of the god Fudō Myō-ō. It is usually depicted with a dragon coiled around it and the mythology is associated with transformation into a dragon.
 * Coincidentally, there is a sword named Kurikaramaru(倶利伽羅丸) that appears in a kabuki play called Gion Sairei Shinkōki(The Gion Festival Chronicle of Faith) which is also related to the myth of Fudō Myō-ō.