Takemichi Hanagaki is a part-timer whose life is at rock bottom. One day, he learns that the only girlfriend he ever had back in middle school had been killed by the "Tokyo Manji Gang," a group of vicious criminals. Later, Takemichi got pushed onto the railroad and somehow finds himself in his middle school days 12 years ago. To save his girlfriend, Takemichi started his Revenge on his life!
