Adaptation of the Tenjiku Arc.
 
With a future where Toman has been destroyed by Mikey's twisted ideas and Takemichi returning to the past, he decides to become stronger in order to stop Kisaki's plans. On one side, a mysterious gang from Yokohama known as Tenjiku begins to overthrow all the Toman divisions, deciding to destroy all the gangs in Japan, becoming the most powerful and unique.
 
Kisaki has been planning something for his purposes against Toman, now that he is banned.

Hanagaki Takemichi was once a low-life punk, but after biting off more than he could chew with a gang in middle school, he ran away from his old life. Now that he’s an adult, the gang that once terrorized him has grown into the largest gang in Tokyo, and they’ve started killing people–including his old girlfriend! After learning this news, a mysterious force on a train platform shoves Takemichi right in front of an approaching train. As his life flashes before his eyes, he blinks to find himself transported back to middle school, before he fled from the gang! Now he has the chance to right what went wrong all those years ago. Can he save his girlfriend’s life in the future–and what else might he change if he’s rewriting the past?
 
(Source: Seven Seas Entertainment)
 
Notes: 
- Winner of the Shounen Manga category of the 44th annual Kodansha Manga Awards. 
- Includes 1 extra chapter.

Despite his best time-leaping efforts, Takemichi Hanagaki continuously fails to prevent the present-day death of Hinata Tachibana, his adolescent love. The adult Takemichi grapples with grief and the ramifications of the Tokyo Manji gang's criminal empire—an unintended product of his timeline meddling. Though the gang once operated under the idealistic Manjirou "Mikey" Sano, it has now been taken over by the malicious Tetta Kisaki and, as a result, has abandoned its original optimistic intent.
 
Despite feeling hopeless, Takemichi travels to the past once again to investigate Black Dragon, a rival motorcycle gang whose actions ultimately lead to Hinata's demise. There, he meets the young Hakkai Shiba, a fellow gang member whose older brother, Taiju, tyrannically rules Black Dragon.
 
Takemichi, with Chifuyu on his side, works to unravel the fates of Black Dragon's members, fighting to create a happy future for his loved ones.
 
(Source: MAL Rewrite, edited)

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