Light Novel Series Beginning with K
- Blood Blockade Battlefront
- By the Grace of the Gods (Kami Tachi ni Hirowareta Otoko)
- Chrome Shelled REGIOS
- Demon Slayer: Kimetsu no Yaiba
- Hensuki: Are you willing to fall in love with a pervert, as long as she's a cutie?
- If Her Flag Breaks
- K
- Kabaneri of the Iron Fortress
- Kage kara Mamoru!
- Kagerou Project
- Kaguya-sama: Love Is War
- Kaifuku Jutsushi No Yari Naoshi
- Kaiju No. 8
- Kaiko sareta Ankoku-heishi (30 Dai) no slow na second life
- Kaito Tenshi Twin Angel
- Kakugo wa Iika Soko no Jyoshi.
- Kakuriyo No Yado Meshi
- Kamen no Maid Guy
- Kamen Rider Series
- Kamen Rider Zi-O
- Kami-sama no Inai Nichiyobi
- Kamisama Kazoku
- Kamisama no Goyonin
- Kamisama no Memocho
- Kampfer
- Kannagi
- Kanokon
- Kanon
- Kanpeki Sugite kawaige ga Nai to Konyaku Haki Sareta Seijo ha Ringoku Ni Urareru
- Kara no Kyokai
- Karada Sagashi
- Karakuri-zoushi Ayatsuri Sakon
- Karin
- Kashimashi Girl Meets Girl
- Katana Gatari
- Katekyo Hitman Reborn!
- Kekkaishi
- Kenja no Deshi wo Nanoru Kenja
- Kenja no Mago
- Kenshi Wo Mezashite Nyugaku Shitanoni Maho Tekisei 9999Na Ndesukedo!?
- Kenzen Robo Daimidara
- Kiddy Grade
- Kimagure Orange Road
- Kimi ga Aruji de Shitsuji ga Ore de
- Kimi Kiss
- Kimi ni Todoke
- Kimi wa Kanata
- Kindaichi Shonen no Jikenbo(Kindaichi Case Files)
- KING OF PRISM
- Kingdom
- Kingdom Hearts
- Kiniro no Corda
- Kinkyori Renai
- Kinnikuman
- Kino no Tabi - the Beautiful World
- Kisaragi Gold Star
- Kishin Hoko Demonbane
- Kishuku Gakko no Juliet
- Kiznaiver
- Kizoku Tantei
- Knights & Magic
- Knights of Sidonia
- Kochira Katsushika-ku Kameari-kouenmae hashutsujo
- Koi no Jikan
- Koi to Senkyo to Chocolate
- Koi wa Futago de Warikirenai
- Koihime Muso
- Koizora
- Kokoro Connect
- Kokucho no Psychedelica
- Konkatsu
- Konkatsu Deka
- Kono Naka ni Hitori, Imoto ga Iru!
- KonoSuba: God's Blessing on This Wonderful World!
- Kore Ha Keihi De Ochimasen!
- Kore wa Zombie desu ka? (Is This a Zombie?)
- Koroshiya-san
- Koshaku Reijo no Tashinami
- Kotetsu Sangokushi
- Koto no Ha no Niwa
- Kotoura-san
- Koya no Kotobuki Hikotai
- Kujibiki Unbalance
- Kuma Kuma Kuma Bear
- Kumodesuga, Nani Ka?
- Kunon the Sorcerer Can See
- Kurenai
- Kurokami
- Kuroko no Basuke (Kuroko's Basketball)
- Kusen Madoshi Kohosei no Kyokan
- Kyo kara Maou!
- Kyo wa Kaisha Yasumimasu.
- Kyo, Koi wo Hajimemasu
- Kyokujitsu no Kantai
- Kyoran Kazoku Nikki
- Kyuukyoku Shinka shita Full Dive RPG ga Genjitsu yori mo Kusoge Dattara
- Shincho Yusha (The Hero Is Overpowered but Overly Cautious)
- The Apothecary Diaries (Kusuriya no Hitorigoto)
- The War Ends the World / Raises the World