A collection of side stories included with the blu-ray limited editions of the K – Return of Kings anime.
– BD1 「潜伏と再開」 (On Lying in Hiding and Reunions) by Miyazawa Tatsuki
– BD2 「剣、二振り」 (Swords in a Pair) by Suzuki Suzu
– BD3 「テンペルホーフ1945」 (Tempelhof 1945) by Takahashi Yashichirou
– BD4 「クリスマス・キャロル」 (Christmas Carol) by Furuhashi Hideyuki
– BD5 「昴/長男と、その親友」 (The Pleiades & The Eldest Son and His Best Friend) by Kabei Yukako
– BD6 「デスパレート・ゲーム」 (A Desperate Game) by Raikaku Rei
– BD7 「ある少年の進路探し」 (A Certain Boy’s Search for his Future Path) by Azano Kouhei