This volume is a direct continuation of an ongoing serialized narrative and does not function as a standalone entry. It picks up mid-arc during the Culling Game, requiring knowledge of the preceding twenty volumes to understand the context of the characters and their current objectives.
This book covers chapters 181 through 190, focusing specifically on the Tokyo No. 2 Colony arc. It is part of the main sequence of the series and follows the established release order, which is the intended way to experience the plot developments.