A DECLARATION OF WARTo get Chifuyu Matsuno and Ryusei Satou back, Tomans First Division Captain Keisuke Baji goes into the lions den to face off against his old rival, Kojiro Hishi one of Yotsuya Kaidans founding members. Amidst the fighting, Ryusei reveals himself to be a secret Yotsuya member and stays behind. But Baji claims Ryusei has been imprisoned and tormented, and requests to personally take Yotsuya down without the help of Tomans other division leaders. Will Chifuyus support of Baji waver in the face of a gang war in which his side is severely outnumbered?The untold story of two of Tomans toughest officers continues in this Tokyo Revengers tale!