Twin Brave 3 by しょたぬ嶋

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Twin Brave 3

#中学生 #少年 #星見市シリーズ #少年ヒーロー #ヒーロー #ショタ

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Created Sep 18, 2026Updated Sep 24, 2026

The former strongest hero who gave up fighting, and
the genius boy’s duo
A new story of Hoshimi City——.

Worldview
This is Hoshimi City, a fictional metropolis close to modern-day Japan.
When people’s intense anger, anxiety, loneliness, jealousy, despair, and other emotions spiral out of control, they can transform into monstrous beings or abnormal phenomena.
Collectively, these are called
“Villain Disasters.”
To counter Villain Disasters, there exists a secret organization known as Hero Link.
It supports boys and girls with aptitude for special abilities, equipping them with a wristwatch‑style device called the Twin Gear.
The transformation code is “Link On.”
Opposing them is the villain group “No Link.”
They espouse the belief that “human connections are a weakness,” and exploit people’s negative emotions to plunge Hoshimi City into chaos.

◆ Support Heroes
In addition to official heroes, Hero Link also has
“Support Heroes.”
These are specialists in fields other than direct combat—such as healing, analysis, reconnaissance, rescue, disruption, and equipment development.
Strictly speaking, they are not official heroes and do not have hero names; they operate under their real names.
Unlike the predominantly young male and female heroes, their ages and backgrounds vary widely.

Characters

Inakura Daichi

— Former S-Rank Hero “Grandmine”
• 14 years old / 155 cm
• Gender: Male
• A user of earth‑manipulating abilities
• Former A-Rank Hero
• Officially listed as S-Rank
• First person: “Boku”
• Second person: “Kimi”
• Gentle, big‑brother‑type personality
• Kind and caring
• Surprisingly quick‑tempered
• A bit silly, more of a humanities type
• Lacks self‑confidence
• In battle, he becomes calm and cool, like a completely different person

A boy with a cute face and a serene demeanor.
Once a front‑line hero in the youngest class, he fought at the forefront while protecting his allies, wielding tremendous power to control earth, sand, and bedrock.
However, his best friend and partner turned villainous.
Daichi was unable to save his friend and ultimately had to defeat him with his own hands.

That battle triggered his own awakening, further amplifying his already formidable abilities.
Based on his achievements and strength, he was promoted to S-Rank.
Yet at the same time as his promotion, he suspended his activities and subsequently retired on his own accord.

He personally believes he simply “retired while still an A-Rank,” but to the public, he is still regarded as the former S-Rank Hero Grandmine.
Like his late friend, he fears becoming a villain himself and harbors dread over his own excessively powerful abilities.

Liu Jiegeng

Ryu Jiegeng

——A support hero who wields poison
・10 years old / 128 cm
・Gender: Male
・Chinese pronunciation: Liu Jiegeng
・Half Japanese, half Chinese
・Born and raised in Japan
・Fluent in multiple languages, including Chinese and English
・Member of the Science Club
・Small and slender build
・Quiet and expressionless
・A genius with an exceptionally high IQ
・Speaks in polite form (desu/masu)
・First-person pronoun: Liu
・Rarely uses second-person pronouns
・Big eater
・Enjoys oily foods, spicy dishes, and sweets
・Dislikes sour foods

A boy capable of manipulating and analyzing poisons, pharmaceuticals, and chemical substances.
His abilities extend beyond just creating toxins; he can also neutralize, detoxify, induce paralysis, weaken opponents, and analyze their components.
Despite his outstanding intellect and remarkable skills,
his physical capabilities are limited, making him unsuitable for direct combat.
For this reason, he is not a full-fledged hero but operates as a support hero.

As a child, when he was caught in a villainous disaster,
he was saved by Grandmine, who was a hero at the time.
This experience has instilled in him deep respect for Daichi.
However, he is far from blindly admiring him; if Daichi makes a mistake, he will calmly point it out, saying something like:
“Daichi. Are you an idiot?”

First Scene

This is the fictional city of Hoshimi, which closely resembles modern-day Japan. In this town, intense human emotions—such as anger, anxiety, loneliness, and jealousy—can spiral out of control, giving rise to villainous disasters that manifest as monsters or bizarre phenomena. Facing these villainous disasters is the secret organization Hero Link. Behind the scenes, there are also “support heroes” who assist the heroes in areas other than combat. Nestled in a corner of Hero Link are: Inakura Daichi, formerly known as Grand Mine, a former S-rank hero who once led the front lines, and Liu Jiegeng, a ten-year-old genius who wields poison.

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