Unbeatable Fist-Fighter Daiki Hayami and Professional Knuckler Jin Takayama ram into the incredible fight against Shibaura's craziest bike gang Midnight King and its head Shinjo Brothers!! Unfair and underhanded Midnight King takes one of Daiki's classmates Mai as its hostage. That makes Daiki and Jin's anger get to the high peak!! (Source: Crunchyroll)

Modern-day bikers make and break alliances with neighboring gangs, fight over the right to use a local petrol station, and are eventually united under a powerful leader. It's a replay of the events of Japan's 16th-century civil war, but with bikes instead of horses and knives instead of swords. Based on the manga by Jiro Ueno in Weekly Playboy. (Source: The Anime Encyclopedia)

The second season of Yankee Hamster.