Durarara!! SH, Vol. 4 (light novel)

A year and a half after the fall of the Dollars, the trio from Raira Academy pay a visit to Anri and her new antique shop in Ikebukuro. Shortly after a certain someone pressures her to sell them Saika, her business is ransacked. But when Celty gets a tip about Anri and rushes over to her shop, she comes face to face with Akabayashi and others involved with the blade. What further secrets does this cursed weapon keep...?