The town of Kaimon, many years ago. Yuu Hino simply wants to move on from a violent moment of his past but it's difficult. Hiro Onimada wants to change his delinquent ways but finds it a pain in the ass. Jin Tao...Just wants the first day of high school to be over with. But for these three friends, things just only get more complicated and it looks like violence is the only solution...  Prequel actionized spin-off of the Kaimon Tales!