Unconditionally (Yūta Okkotsu)

𝘊𝘶𝘳𝘴𝘦𝘥 𝘛𝘦𝘤𝘩𝘯𝘪𝘲𝘶e

Diligent Toxin

Origin of the Cursed Butterfly technique

The curse technique was manifested by a big cursed sorcerer family named Koizumi.

They were said to be cursed by a curse named Hanami.

The male would be physically strong but live to be 30 or younger, whilst the female was known to be fragile yet possessing tremendous intelligence.

[Fun fact: MC(Searu) have a butterfly birthmark on her nape.]

An Ancestor or the starter of the technique is Koizumi Chiyo-ni, is said to be a prominent woman during the Heian period. Despite never having carried a weapon, she was able to withstand curses with her frial body.

If the user is a female, she would be incredibly fast and has low physical strength. However, they are extremely flexible. If the user is male, he is physically stronger yet slower. However, males are also flexible. However, not by much.

Women possesses superhuman speed and reflexes enabling them to effortlessly evade and out-pace curse, attacking them before they can even register what happened.

Koizumi clan is so fast that it often appears as if they teleported.

This cursed technique enables users to manipulate and produce butterflies and other insects. It is thought that their curses attract and hypnotise cursed spirits and other living beings. Blood, plants, and poisons can all be used to create shikigami.

[Their butterflies also enables them to create a hallucinations, and feed on people] 

(yum)

The poison contained by the insects and created by the user is acid-like. Capable of destroying practically everything. Whether or if it is alive. The poison has the ability to intoxicate, necrotize, and paralyse anything in its path.

[Intoxicate: to excite or stupefy by alcohol or a drug especially to the point where physical and mental control is markedly diminished.

Necrotize: causes patches of tissue to die. These infections are the result of bacteria invading the skin or the tissues under the skin. If untreated, they can cause death in a matter of hours.

Paralyze: to cause a person or animal to lose the ability to move or feel part of the body, or to cause someone or something to be unable to act or cooperate correctly.]

The poison inflicts large amount of pain, even if it's mentally of emotionally.

The user can not only produce butterflies and other insects, but also control real ones, even if they are thousands of kilometres away. They can see, spy, and hear what the butterfly hears. The butterfly can corrupt the user's targets, causing them to inject a virus that will kill them later.

The butterflies are extremely useful in terms of escape from battle. Even in verge of death! This can make it difficult for their opponent to be able to find their opponent's fragment from their body depending on the number of real butterflies and shikigami ones.

The user follows a calm demeanour of a butterfly. Yet very fragile but the attacks are very dangerous.

Techniques:

Butterfly Dance: Caprice (蝶ちょうノ舞まい　戯たわむれ Chō no mai: Tawamure): The user leaps into the air and charges at the opponent, stinging them with their sword many times to inject poison.

Dance of the Dragonfly: Compound Eye Hexagon (蜻せい蛉れいノ舞まい　複ふく眼がん六ろっ角かくSeirei no mai: Fukugan Rokkaku): A six strike attack in which the user strikes and injects many doses of poison into the target's vulnerable points (such as the neck, heart, torso, and so on) in order to kill them with a massive dosage of poison.

Dance of the Centipede: Hundred-Legged Zigzag (蜈ご蚣こうノ舞まい　百ひゃく足そく蛇じゃ腹ばらGokō no mai: Hyakusoku Jabara): An attack in which the user uses their full speed to run a zigzag pattern that confuses their opponent in order to create an opening for them to directly stab their opponent's neck and inject poison to kill them, with the force and power of the stab being enhanced by their speed's momentum.

Butterfly Dance: Caprice, Illusory Light (蝶ちょうノ舞まい　戯たわむれ・幻げん光こうChō no mai: Tawamure - Genkō): The user lunges at their opponent before launching a torrent of straight short thrusts with their sword, culminating in a tremendous thrust that sends their opponent away and onto their back. The user then leaps into the air, morphing into a large butterfly of light, before plunging from it and slicing their sword straight through their opponent and into the earth, breaking the surrounding landscape and leaving a massive crater behind.

Swift Thrust (速はや足あし突づき Haya'ashi Tsuki): The user spins before launching off the ground and racing at unnoticeable speeds in a zigzag pattern towards their opponent, then performs a forceful, solitary thrust that hits twice. This is related to the Centipede Dance: Hundred-Legged Zigzag.

Rising Thrust (昇のぼり突づき Nobori Tsuki): From a crouching position, the user rises and thrusts upward in a curving motion, launching both themselves and their opponent into the air.

Sixfold Thrust (六ろく連れん突づき Rokuren Tsuki): The user launches five short yet powerful thrusts towards their opponent before briefly hesitating and launching a sixth, more powerful thrust. This is related to Dragonfly Dance: Compound Eye Hexagon.

Domain Expansion

Mirage dance(朧舞 Mirājudansu): The user traps the target in a wisteria-filled illusory region. The targets are then hypnotised by the beauty of the butterflies and dance with them until they are killed by the poison that the users have secretly given to them. It's practically difficult to get away. The poison is lethal to both humans and cursed spirits.

Highly based on Shinobu from ' Demon Slayer '