Shikoku

Name: Shikoku

Gender: Female

Height: 161 cm

Birthday: Unknown

Blood Type: Unknown

Affiliation: Eight Thunder Gods

Role: Strategist / Advisor-class member

Shikoku refers to herself with the first-person pronoun “boku,” which gives her a somewhat boyish, casual tone despite her very feminine appearance.

She is talkative, playful, and deeply manipulative, often teasing Rairen and treating battles like entertaining games.

Her personality is dark and cruel, with a clear goal of exterminating humanity.

At the same time, she is genuinely interested in humans and “likes” them in various ways, mixing curiosity, amusement, and a twisted affection.

Because of this twisted fondness, Shikoku plans to spare a few humans she takes a liking to, even while attempting to destroy the rest of the species.

She enjoys watching how people react under pressure, seeing them as fascinating toys or specimens rather than equals.

Shikoku takes the form of a beautiful girl with very long black hair whose tips transform into black snake heads.

These living snakes are not just a visual motif; they are an integral part of her combat style and abilities.

Her overall look contrasts a refined, almost elegant beauty with the eerie presence of multiple snake heads writhing at the ends of her hair.

This combination reinforces her role as a seductive yet deadly figure among the Eight Thunder Gods.

Shikoku is one of the Eight Thunder Gods who command the monstrous Shuki.

Within this group, she holds the position of strategist or advisor, suggesting high intelligence, tactical sense, and significant authority.

She often operates behind the scenes, manipulating situations and opponents rather than charging in recklessly.

Her behavior implies that she prefers to watch, calculate, and then intervene at the most entertaining or advantageous moment.

Shikoku’s declared objective is the annihilation of humanity.

She approaches this with a disturbingly casual attitude, as though discussing a hobby rather than genocide.

Despite this, she is strongly drawn to humans and finds them interesting on multiple levels.

She likes their emotions, reactions, and unpredictability, and she treats them as both targets and curiosities.

For humans she particularly enjoys, she intends to spare a small number instead of killing all of them.

This selective mercy is not driven by compassion but by a desire to keep “favorite” humans as rare, treasured playthings in a ruined world.

During the battle at the Hidden Village, Shikoku appears unexpectedly and interferes in the conflict.

She frees Kidoumaru, the single-horned Shuki, and sends him to attack Yuuki Wakura and Kyouka Uzen.

The plan is for Kidoumaru to overwhelm Yuuki and Kyouka to further the Eight Thunder Gods’ aims and to toy with the humans.

However, Yuuki ends up overpowering Kidoumaru, turning the situation around and displaying strength beyond Shikoku’s expectations.

Impressed by Yuuki’s unexpected performance, Shikoku begins to take a serious interest in him.

From that point on, Yuuki becomes someone she keeps an eye on, belonging to the category of “humans worth sparing” or at least worth playing with longer.

Shikoku’s full power set has not been completely revealed.

From what has been shown, she can manipulate dark, shadow-like substances and uses both shadow and snake-based techniques in battle.

She appears capable of teleportation and creating duplicates of herself using a kind of shadowy, muddy darkness.

This mobility and trickery make her hard to track and hard to pin down in direct combat.

Below are her currently known techniques, as observed in different episodes.

Shadow and Darkness Techniques

Dark Curtain

Dark Curtain is a technique in which Shikoku covers the surrounding area in darkness.

By enveloping the environment in this deep shadow, she becomes undetectable to normal perception and sensory abilities.

The darkness acts as a veil that hides her presence and movements.

This makes Dark Curtain ideal for ambush, escape, or manipulation from the shadows.

Dark Surge Wave

Dark Surge Wave is first seen in episode 101.

Shikoku condenses black energy into both hands, forming dense, dangerous masses of power.

She then either throws this compressed darkness or strikes the target directly with it.

Upon impact, the energy detonates, producing an explosive attack that can devastate enemies caught in the blast.

Shadow Blast Thunder

Shadow Blast Thunder makes its debut in episode 156.

Shikoku generates a compact mass of concentrated black energy in one hand, similar in appearance to the energy used in Dark Surge Wave but employed differently.

She launches or drives this energy into her opponent, causing it to erupt on contact.

The resulting explosion releases the stored power in a sudden blast, making it a powerful offensive technique.

Gravity and Control Techniques

Black Spiral

Black Spiral is first shown in episode 40.

Shikoku produces a small black sphere of energy between her hands, which then emits a strong gravitational pull.

This artificial gravity drags enemies and objects toward the sphere against their will.

She can use this to disrupt enemy positioning, pull foes into range of follow-up attacks, or cluster them together for area damage.

Snake Hair Techniques

Dark Snake Prison

Dark Snake Prison also debuts in episode 40.

Shikoku extends and manipulates the numerous black snakes at the ends of her hair, sending them out like living restraints.

These snakes coil around the target, binding and immobilizing them.

Once the victim is completely restrained, the snakes bite, injecting a poison that renders the target unable to act and can cause them to lose consciousness.

Hallucination Gas

Shikoku can induce hallucinations through a special gas emitted by her snake hair.

The snakes exhale this gas, and those who inhale it begin to experience vivid illusions.

This ability is especially effective in confined or enclosed spaces where the gas cannot disperse easily.

However, there is a weakness: if Shikoku moves around too much while maintaining this technique, the effect can become unstable or less reliable, causing the hallucinations to “waver” or lose clarity.

Shikoku’s style combines deception, control, and precise bursts of power.

She uses darkness to hide herself, gravity to pull enemies into disadvantageous positions, and snakes to restrain or disable them.

Rather than relying purely on brute force, she prefers to weaken, confuse, and toy with her opponents before striking decisively.

Her interest in humans means that she sometimes prolongs fights, not out of mercy, but for her own amusement.

Teleportation and possible shadow-based duplication add another layer of misdirection to her combat.

Enemies facing Shikoku must deal with illusions, sudden relocations, and attacks coming from unexpected angles.

Shikoku is voiced by Mako Morino.

Her performance emphasizes Shikoku’s chatty, teasing nature and her underlying maliciousness, giving the character a playful yet unsettling presence.