Focused on Yata's and Fushimi's past. There are three parts: "Meeting," "Getting Along," and "Betraying."

Novel adaptation of K, tells the story of how the current red clan was created, the background story of Kushina Anna, and details of Kamamoto Rikio, Yata Misaki and Fushimi Saruhiko joining the red clan and their time together as a clan.

A novel adaptation of K, focused on the history of the blue clan and the events which led to Munakata Reisi's appointment as the current blue king.

Novel adaptation of K. This is focused on Isana Yashiro, Yatogami Kuroh, and Neko.

An anthology comic of Crows by various mangaka to celebrate the 25th anniversary of the series. Volume 1 (2016/06/08) 1. Setoutsumi Gaiden (セトウツミ外伝) \[Konomoto Kazuya\] 2. Rakugaki (ラクガキ) \[Fujiwara Satoshi\] 3. Crows vs. Hakaiju: Saikyou yori Saikyou (CROWS vs. HAKAIJU～最強より最凶～) \[Honda Shingo\] 4. Crows Ladies (クローズLadies) \[Suzuki Dai\] 5. Housen Tetsu no Okite (鳳仙鉄の掟) \[Hirakawa Tetsuhiro\] 6. Sei & Seiya vs. Suzuran!! (セイ&セイヤvs.鈴蘭!!) \[Kuwahara Shinya\] 7. Fake Fur: Fujimi no Haiji (FAKE FUR -不死身のハイジ-) \[Ooishi Hiroto\] 8. Crows St. Emperor (クローズSt.Emperor) \[Story: Kawata Yushi, Art: Yukito Imouto\] Volume 2 (2019/02/08) 1. Sono Otoko, SAiKO ni Tsuki (その男、SAIKOにつき) \[Honda Shingo\] 2. Nakidokuro (ナキドクロ) \[Hirakawa Tetsuhiro\] 3. Karasu no Fun (カラスのフン) \[Ozawa Toshio\] 4. Others (アザーズ) \[Fujiwara Satoshi\] 5. Hokuto no Ken: Ichigo Aji x Crows II (北斗の拳 イチゴ味×クローズII) \[Story: Kawata Yushi, Art: Yukito Imouto\] 6. Karasu no Rock and Roll (カラスのロックンロール) \[Asada Yukai\] 7. Ame Nochi Hare (アメノチハレ) \[Saiwaki Masayuki\] Volume 3 (2019/10/08) 1. Crows Eraser (クローズERASER) \[Araki Hikaru\] 2. Densetsu ga Ita Machi (伝説がいた街) \[Yamamoto Shintarou\] 3. Makeinu (マケイヌ) \[Nakamura Yuuji\] 4. Keii wo Haraubeki Teki (敬意をはらうべき敵) \[Saitou Shuuhei\] 5. Suzuran Koukou 1-nen: Mayama Yukinari no Yabou (鈴蘭高校1年 真山行成の野望) \[Ameno\] 6. Crows Up (クローズアップ) \[Takahashi Shinsuke\] 7. Crows Ladies (クローズLadies) \[Suzuki Dai\]

In the *K* novel series: V.1 - *Side: Blue* - Focuses on the history of the blue clan and the events which led to Munakata Reisi's appointment as the current blue king. (Takes place before the anime, but after the events of K Side: Red) V.2 - *Side: Red* - HOMRA in its early days and Anna's initiation to the clan. V.3 - *Side: Black & White* - The silver clan between episodes 7 and 8 of season 1, focusing on flashbacks to Kurou, Neko, and Shiro/Weissman’s past. V.4 - *R: B* - Suou Mikoto, leader of HOMRA, was strengthening his clan in Shizume Town. Munakata Reisi, the Blue King just enthroned, immediately reorganizes Scepter 4 and re-establishes order. When these two polar opposites meet, conflict is inevitable! V.5 - *Side: Green* - Features Gojou Sukuna as the main character, and follows his rise through the ranks of JUNGLE.

Collections of one-shots that won the monthly Hop Step Award from 1987 to 1996.