Event Fuuma Revolt

Mentioned in the Online Universes, was a coup d'état long before the events of Taimanin Asagi (1). Though the date depends on which Online Universe, in RPGX it happend 13 years ago.

Pre Event
The Fuuma clan that were the leaders of the Taimanin and represented them to the Japanese government, in the past. As the largest clan comprised of subclans they ruled for a long time. However, they were viewed as selfish, outdated and followed a "their clan first" policy, which lead to conflict with other clans and Japan. Cought in extreme, outdated or criminal activity and internal issue of leadership within made them less and less the ideal leaders. In the TABA and Canon, the Disappearance Kurenai and revealed corruption by Fuuma members, that worked for Section Three, lead to the Japanese government to phase out the Fuuma clan as representatives. Favoring the more modern and moral Igawa clan by the request of an Igawa Elder, that coninced Section Three leader Yamamoto Nobushige.

Event
Instigated by the main clan head Fuuma Danjo, the Fuuma clan and multiple subordinate clans called the "Eight Generals of the Fuuma", would rebel against the decision of the government, to be removed as leaders of Gosha Village and Taimanin.

Depending on the continuity, which is different between Taimanin Asagi Battle Arena, Taimanin RPGX and Action Taimanin, certain Fuuma members or clans joined them or not.

The Igawa clan, Koukawa clan and their leaders Igawa Asagi and Koukawa Oboro as well as other clans, fought the Fuuma. Regardless of continuity the Fuuma clan and Danjo, were defeated by Asagi and Oboro. Leaving the clan in an even worse state than before.

Post Event
In TABA, Danjo fled after this fight to the UFS (Future USA), taking most of the clans that were allied with him. A handful of Fuuma Taimanin and clans remained in Gosha Village and remained loyal to Asagi. Fuuma Kotaro, the son of Danjo could not became the new head and was left with nothing, leaving the village forming a New Fuuma Clan. The new and old part of the clan came later into conflict and Danjo found his end by his son's hands.

In both RPGX and Action, Danjo was killed in the conflict and less clans joined his side. The Fuuma remained in Gosha Village and Fuuma Kotaro, which hated his father deeply for his actions became the new head. A small part of the clan refused to give up and joined the UFS but only many years later a follow up conflict, resulted in a second revolt. Nisha Gaiza a former friend of Kotaro formed the Fuuma Ninja Troops, which also left the village, after trying to take over the clan and village.

Trivia

 * The conflict is not mentioned in the main canon but the Fuuma clans bad reputation is mentioned in Taimanin Asagi ZERO.
 * A key difference outside of the outcome and death of Danjo between TABA and RPGX, is also Kotaro's age which is given as 3 years old in RPGX. However, flashbacks in TABA that were before the revolt, make Kotaro at least 10-16 years old around that time.
 * The Disappearance Kurenai did not happen in RPGX and Action, as she is far younger in those.