Watching the news, Takemichi Hanagaki learns that his girlfriend from way back in middle school, Hinata Tachibana, has died. The only girlfriend he ever had was just killed by a villainous group known as the Tokyo Manji Gang. He lives in a crappy apartment with thin walls, and his six-years-younger boss treats him like an idiot. Plus, he’s a complete and total virgin… At the height of his rock-bottom life, he suddenly time-leaps 12 years back to his middle school days!! To save Hinata, and change the life he spent running away, hopeless part-timer Takemichi must aim for the top of Kanto’s most sinister delinquent gang!!
The Black Dragons, a brutal motorcycle gang, are the cause of Toman's future descent into evil! Takemichi meets the leader of the gang, Taiju Shiba, and his younger brother, Hakkai. Takemichi's got to stop Hakkai from killing his own sibling, and joins forces with Kisaki, despite the risk. Will defeating Taiju save Hina this time?! A white-knuckled Christmas showdown begins!