A Violence Jack one-shot from 2001.  What happens when Jack and some bikers mysteriously get sent back into the age of samurai.

September 11, 197x, In the whole Kantou region a magnitude 8-9 violent earthquake occurred. Scholars called it the great destruction of the Showa Era, but the people called it the earthquake from hell! Volcanoes erupted, buildings crumbled, Tokyo became decimated in a single day. The government, after failing to recover the city, abandons Tokyo and moves the capital. The survivors form a society with no laws. In this harsh lawless world emerges Jack, a 10 foot giant who annihilates anyone and anything in his path. The manga details his journey. Note: This was the serialization in the magazine Weekly Shounen Magazine and Monthly Shounen Magazine.

Volume 1 
1-3. Akuma Kishi (悪魔騎士, Demon Knight); Mandala Vol.1~3 
4. Kochuuten (娘中天); Bessatsu Morning 2004 #2 
5-8. Silene-chan (シレーヌちゃん); Comic Heaven vol.1~4 
9. Reikai Door (霊界ドアー); Manchu 2009/06/05 
10. Vampire Cop (ヴァンパイアコップ); Young Jump 1999 #34 
11. Harenchi Mama-san (ハレンチママさん); Leed Comic 1985/01/07 
 
Volume 2 
1. Violence Jack: Sengoku Majinden (バイオレンスジャック～戦国魔人伝～, Violence Jack: Demons in a War-Torn Land); Bessatsu Young Jump 2001 vol.14 
2. Mugen Senshi (夢幻戦士); Action Hero 1982-06 
3. Kaiketsu Furo Zukin (カイケツ風呂頭巾); Morning 2014 #52 
4. Wanda-kun (ワンだ君); Comic Bonbon 2007-01

Tags