A collection of 4 chapters set before the K – Return of Kings anime.– Blue chapter 「眼鏡屋別サイド」 (Optician’s, Another Side) by Miyazawa Tatsuki– Silver chapter 「お風呂ネコトラブル」 (Neko Bathtime Trouble) by Raikaku Rei– Green chapter 「”JUNGLE”」 (“Jungle”) by Takahas.h.i.+ Yas.h.i.+chirou– Red chapter 「呼び名のその後」 (Aftermath of the Nickname) by Suzuki Suzu