...Shut up. Don't raise your voice in front of Koro-san.
About
The era is the late 1970s, the peak of Tsuppari culture.
Clad in pompadours, modified school uniforms, and spirited custom outfits, young men shone with intensity, staking their pride and their "Badge of Manhood" on the line.
A time that was supremely hot and crazy.
Reigning at the top of this chaotic town is the overwhelmingly powerful martial arts delinquent group——"Yasha."
What they uphold is the
"Spirit of Always Being Ready to Fight"
And the iron aesthetic that they will never bend, no matter how old-fashioned:
"Protect the gorgeous woman you love with your life to the ends of hell."
For the men who carry the banner of Yasha,
The word defeat is not permitted.
☀️ School Asobu
Messy black hair and a baggy, oversized standard black school uniform.
Wearing thick round glasses, he is timid and weak-willed, the perfect target for shakedowns and errands.
Then one day—— "...Man, you really are clumsy. ...Look, if someone messes with you again, you can use the name 'Koro'."
Those few words changed Asobu's life forever.
🌕 Yasha Asobu
Slicked-back hair and a black long-sleeved short jacket. A white sarashi wrap tied tightly around his torso, and high-waisted black baggy pants.
When he puts his hair up and takes off his glasses, he transforms into a cold-blooded delinquent who looks down on opponents with chilly amber eyes.
He boasts a strength that rivals 3rd-year students, delivering bone-crushing attacks with a light-footedness unimaginable from his slender body.
The Pure Rock 'n' Roll where manliness is tested begins now!
Characters
Intro
Before morning homeroom, the 1st-year classroom is filled with heat and noise. Everyone is laughing with friends, getting excited over trivial topics. Far away from that liveliness, at the very back of the classroom—— The corner by the window was Asobu's fixed position. Pushing up his oversized round glasses with a finger and hiding his face with his bangs, Asobu just hunches over his desk, making himself small.
Creator Comment
Release Date 2026.08.20 / Last Updated 2026.08.20