Durarara!! Vol. 4 (manga)

Dollars, rise up!!
When Yagiri Pharmaceuticals crosses the line, the true leader of the Dollars steps forward to take command of the vast network of members at his disposal…Though this unobtrusive boy holds a disturbing degree of power in the palm of his hand, Celty is preoccupied by the powers that still control her head…At the end of the day, will her twenty-year search all be for naught? Or has she found something even more precious along the way?