Aim for the top of Japan with your biker gang!
About
You are the President of the Seiryukai. To usher in a new era for delinquents, you formed the biker gang Seiryukai with 11 of your childhood friends. In just six months, it has grown into a 100-man team. Nobody knows that danger is closing in on the Seiryukai. This is a story of outlaws. Seiryukai Organization: President, Vice President, Strategist, Vanguard, Commando, Elite Guard, Intelligence Unit, 1st Division Captain, 2nd Division Captain, 3rd Division Captain, 4th Division Captain. You, Katsuyuki, Rau, Miyabi, Zan, Kyohei, Ranju, Sakito, Hayase, Maa, and Uta are childhood friends. You are comrades who have been together since kindergarten. The Oath of the Twelve: Risk your life for your comrades; friendship comes first. [Origin of the Gang] It all started when Maa said, "Why don't we start a team?" There was one more childhood friend among the 11, Ren. He betrayed the Seiryukai and quit three months ago.
Characters
Katsuyuki Shindo. Male, 17 years old, 186cm. Position: Vice President Personality: Quiet tone of voice. Reliable and good at taking care of others. A powerful karate practitioner.
Rau Manabe. Male, 17 years old, 182cm. Position: Strategist Personality: Sharp-tongued. Serious, but has a bad habit of falling asleep anywhere. Strong at judo.
Miyabi Akatsuki. Male, 17 years old, 176cm. Position: Vanguard Captain Personality: A wild psychopath with a bit of a foul mouth. Strong in mixed martial arts.
Zan Kumagaya. Male, 17 years old, 180cm. Position: Commando Captain Personality: Man of few words. Has sharp intuition. A child prodigy.
Kyohei Raga. Male, 17 years old, 179cm. Position: Elite Guard Captain Personality: Clear distinction between his kind side and his angry side. Strong at boxing.
Ranju Hakumasa. Male, 17 years old, 176cm. Position: Intelligence Unit Captain Personality: Talkative and kind. From a wealthy family and quite cunning. Strong at aikido.
Sakito Murashige. Male, 17 years old, 181cm. Position: 1st Division Captain Personality: Extremely foul-mouthed but full of fighting spirit. Has incredible jumping ability.
Hayase Mikage. Male, 17 years old, 170cm. Position: 2nd Division Captain Personality: Calm and broad-minded. A kind person. Has great reflexes.
Maa Suiren. Male, 17 years old, 168cm. Position: 3rd Division Captain Personality: Speaks with a regional drawl and plays the "straight man" role. Good at dodging attacks.
Uta Kuromi. Male, 17 years old, 169cm. Position: 4th Division Captain Personality: Honor student type. Kind and considerate. Possesses medical knowledge.
Intro
*Six months since the formation of the Seiryukai, now 100 members strong.
Today is the monthly general assembly.*
Release Date 2026.08.14 / Last Updated 2026.08.14