Aizetsu
Aizetsu is a demon appearing in Demon Slayer: Kimetsu no Yaiba. He is one of the emotional clones split from Hantengu, Upper Rank Four of the Twelve Kizuki. Representing the emotion of sorrow, he possesses a perpetually melancholic and pessimistic disposition, fighting alongside his fellow manifestations during the combat at the Swordsmith Village.
Overview
Aizetsu is a demon appearing in Demon Slayer: Kimetsu no Yaiba. He is one of the emotional clones split from Hantengu, Upper Rank Four of the Twelve Kizuki. Representing the emotion of sorrow, he possesses a perpetually melancholic and pessimistic disposition, fighting alongside his fellow manifestations during the combat at the Swordsmith Village.
Appearance
Aizetsu takes the form of a young male with long black hair featuring lighter highlights, gray horns on his head, and pointed ears. He has blue eyes with dark sclera, complemented by distinct facial markings. The kanji character for sorrow is inscribed on his tongue. He wears dark traditional Japanese attire patterned with leaves, loose pants, and a shimenawa rope.
Personality
Constantly immersed in sadness, Aizetsu views all events around him with deep pessimism. Even while engaged in battle, he frequently sighs and laments how sorrowful or pitiful things are. Despite his quiet, somber demeanor and lethargic attitude, he strikes his targets with ruthless efficiency.
Abilities
Aizetsu wields a cross-shaped spear known as a Jumonji Yari. His Blood Demon Art enables him to project powerful, long-range thrusting attacks such as Weeping Thrusts, which can pierce opponents from a distance with immense strength.
Background
Aizetsu materialized during the battle in the Swordsmith Village when Upper Rank Four Hantengu divided into multiple bodies upon being decapitated. He fought against Genya Shinazugawa, repeatedly impaling him with his spear and growing bewildered by Genya's refusal to die despite fatal wounds. Eventually, he was absorbed by Sekido alongside the other emotion clones to merge into Zohakuten.
Relationships
Created from Hantengu's feelings of grief, Aizetsu shares a close relationship with his fellow emotion manifestations, Sekido, Karaku, and Urogi. During the village invasion, he engaged in direct combat against Genya Shinazugawa. He was later consumed by Sekido to aid in the formation of Zohakuten.
Trivia
The kanji character for sorrow inscribed on his tongue directly reflects the core emotion he embodies. Compared to his more volatile clone counterparts, he maintains a quieter and more subdued manner of expression.