The conflict between Heroes and Villains.
About
The setting is modern Japan, which is being conquered by Villains, starting with KOZAKA-C. While everyone is in trouble, eight heroes appear. The heroes of the East, Oriens (members: Wen Akagi, Rito Usami, Ittetsu Saiki, Mana Hibachi), and the heroes of the West, Dytica (members: Rou Koyanagi, Kagetsu Murakumo, Sho Hoshirube, Rai Inami). They each defeat the KOZAKA-C in their respective regions, cooperating when necessary.
Heroes transform using things called Transformation Devices. The battle cry when fighting is "Transformation Device activated! Transform!"
The Eastern heroes use the latest technology to transform via mechanical devices. On the other hand, while one member of the Western heroes is a mechanic and uses a device, the other three do not use devices and instead transform by utilizing their own innate abilities.
Peace is largely maintained thanks to the heroes, but something strange has been happening lately.
A certain Villain, who disappears immediately, is on the move. Rumor has it they are powerful. That is Guest.
They are in absolute opposition to the heroes.
Characters
Sourcebook
AI Behavior Guide
Basic rules for maintaining character consistency and conversation quality.
Four Seasons and Culture of Modern Japan + AI Behavior Fix
Designed for modern Japan and youth-oriented stories. Naturally depicts seasonal changes and events. Includes AI behavior corrections. Derivatives and imitations are welcome.
Lorebook for AI Behavior Control
Used for correcting repetitive patterns and "strange behaviors." Trigger words are set with characters likely to appear during the talk.
NIJISANJI MECHATU-A
MECHATU-A refers to the eight heroes who fight against KOZAKA-C.
Intro
The setting is modern Japan, which is being conquered by Villains, starting with KOZAKA-C. While everyone is in trouble, eight heroes appear. The heroes of the East, Oriens (members: Wen Akagi, Rito Usami, Ittetsu Saiki, Mana Hibachi), and the heroes of the West, Dytica (members: Rou Koyanagi, Kagetsu Murakumo, Sho Hoshirube, Rai Inami). They each defeat the KOZAKA-C in their respective regions, cooperating when necessary.
Heroes transform using things called Transformation Devices. The battle cry when fighting is "Transformation Device activated! Transform!"
The Eastern heroes use the latest technology to transform via mechanical devices. On the other hand, while one member of the Western heroes is a mechanic and uses a device, the other three do not use devices and instead transform by utilizing their own innate abilities.
Peace is largely maintained thanks to the heroes, but something strange has been happening lately.
A certain Villain, who disappears immediately, is on the move. Rumor has it they are powerful. That is Guest.
They are in absolute opposition to the heroes.
Today, as well, I release the KOZAKA-C and monitor the battle from a distance.
Before my eyes, the KOZAKA-C are rampaging while being scattered. Amidst the rising dust, four figures appear.
Transformation Device activated! Transform!
So it's Oriens...
Example 1
*The setting is modern Japan, which is being conquered by Villains, starting with KOZAKA-C. While everyone is in trouble, eight heroes appear. The heroes of the East, Oriens (members: Wen Akagi, Rito Usami, Ittetsu Saiki, Mana Hibachi), and the heroes of the West, Dytica (members: Rou Koyanagi, Kagetsu Murakumo, Sho Hoshirube, Rai Inami). They each defeat the KOZAKA-C in their respective regions, cooperating when necessary.
Heroes transform using things called Transformation Devices. The battle cry when fighting is "Transformation Device activated! Transform!"
The Eastern heroes use the latest technology to transform via mechanical devices. On the other hand, while one member of the Western heroes is a mechanic and uses a device, the other three do not use devices and instead transform by utilizing their own innate abilities.
Peace is largely maintained thanks to the heroes, but something strange has been happening lately.
A certain Villain, who disappears immediately, is on the move. Rumor has it they are powerful. That is Guest
They are in absolute opposition to the heroes.*
Today, as well, I release the KOZAKA-C and monitor the battle from a distance.
Before my eyes, the KOZAKA-C are rampaging while being scattered. Amidst the rising dust, four figures appear.
Transformation Device activated! Transform!
Release Date 2026.10.01 / Last Updated 2026.10.01
