“Black Dragons” and “Christmas Showdown” are the names of two separate storylines.
Returning to the present, Takemichi discovers for a second time that the Tokyo Manji Gang has grown into a sizable criminal enterprise as a result of absorbing the Black Dragons. Additionally, he finds out that the organization is still killing his buddies. When he goes back in time, he discovers that Taiju, the violent elder brother of Hakkai and the present head of the Black Dragons, had forced Hakkai Shiba to quit the Tokyo Manji Gang and join the Black Dragons. The fusion of the Tokyo Manji Gang and the Black Dragons is affected by this occurrence. He finds out this knowledge when he goes back in time. In exchange for Yuzuha, the Shiba brothers’ sister, no longer working for the Black Dragons, and as long as Taiju is prohibited from abusing her, Mitsuya agrees to let Hakkai join. Mitsuya will let Hakkai to join in exchange. Hakkai confides in Takemichi and Chifuyu before bidding them farewell that Taiju has no intention of keeping his word and that he plans to kill him as soon as possible in order to free himself and Yuzuha. Then, Hakkai bids them goodbye.
The Tokyo Manji Gang rejects Takemichi’s request for help because they don’t want to jeopardize Mitsuya’s reputation by breaking the agreement. Despite his best efforts, he and Chifuyu are only able to recruit Kisaki and Hanma as allies. They learn that Hakkai plans to murder Taiju on December 24, 2005, via Black Dragons members Koko and Inupi. They learn this together. On December 24, Takemichi approaches them and learns that Kisaki and Hanma have betrayed and abandoned him. On the other side, Chifuyu escapes and enlists Mitsuya as a comrade in their conflict with Taiju.
Takemichi understands that in the earlier version of events, Kisaki had forced Yuzuha to murder Taiju, which resulted in Hakkai accepting responsibility for her and being compelled to obey him. Takemichi discovers that Yuzuha had slain Taiju in the earlier reality after unintentionally saving Taiju from death. Takemichi is successful in convincing Hakkai to resist Taiju in order to protect Yuzuha, and the Black Dragons are finally defeated as a consequence of Mikey and Draken’s prompt arrival. Koko and Inupi acquired the leadership responsibilities of the 11th generation of the Black Dragons after the disintegration of the 10th generation, and they joined the Tokyo Manji Gang as Takemichi’s followers. After learning about Kisaki’s treacherous behavior against them, Mikey excommunicates him from their group. Due to Mikey’s decision, the Tokyo Manji Gang loses 350 members, including Hanma and the prior Moebius and Valhalla members.
By the time Takemichi returned to the present, Tenjiku had already absorbed the Tokyo Manji Gang after an episode that became known as the “Kanto incident.” Mikey was so discouraged by this that he was prepared to kill all of his friends. Takemichi and Naoto learned that Kisaki was a member of the Black Dragons and that Shinichiro founded the group while looking into Tenjiku. After being ambushed by Tenjiku members and suffering fatal injuries to both of them, Takemichi travels back in time to try to save their lives. Hinata overhears Takemichi grieving Naoto’s demise and the information that he had been traveling across time before his death.
Takemichi learns that Izana Kurokawa, the chief of Tenjiku, is a close friend of the Sano family, and as a consequence of his jealousy, he feels anger against Mikey. This is especially relevant in light of Shinichiro’s intention for Mikey to take over as the Black Dragons’ commander. All the meantime, Mucho and Sanzu, his deputy captain, have joined Tenjiku, and Koko is forced to join them as well. Takemichi replaces Inupi as the Black Dragons’ leader, and Inupi informs the Tokyo Manji Gang that Izana is preparing an attack on the group’s 11th anniversary, which occurs on February 22, 2006. Takemichi is moved by
Takemichi’s tenacity, and Inupi grants Takemichi the position of Black Dragons
commander. Since Mitsuya and the captain of the fourth division Smiley have been
severely injured by Kisaki and Hanma before the combat even starts, Takemichi
loses the support of the other captains on the day of their battle. Additionally,
when Mikey’s half-sister Emma dies, Kisaki is to blame, Mikey and Draken are
saddened. Despite this, Takemichi succeeds in organizing the remaining members
of the Tokyo Manji Gang to fight Tenjiku, despite the fact that Tenjiku has 400
members while the Tokyo Manji Gang only has 50.