Series Beginning with K
- Koi suru Oukoku
- Koi to Producer -EVOL x LOVE-
- Koi to Senkyo to Chocolate
- Koi to Uso
- Koi to Yobu niwa Kimochiwarui
- Koi wa Ame agari no yo ni
- Koi wa Tsuzukuyo Dokomademo
- Koi-Shimai
- Koihime Muso
- Koikaze
- Koikoi 7
- Koinaka
- Koisentai Love & Peace
- Koishite Akuma
- Koizora
- Kojak
- Kokkoku
- Kokkurisan
- Koko ga Uwasa no El Palacio
- Kokoro Atatamaru Monogatari
- Kokoro Connect
- Kokoro ga Pokittone
- Kokoro ni Hibiku Monogatari
- Kokoro toshokan
- Kokosei Restaurant
- Kokucho no Psychedelica
- Kokuhatsu
- Kokurikozaka Kara
- Komaneko
- Komi Can't Communicate (Komi-san wa, Komyusho Desu.)
- Komori-san Can't Decline
- Komyogatsuji
- Konda Teru no Goho Recipe
- Konjiki no Gash!!
- Konkatsu
- Konkatsu Deka
- Konnichiwa Anne: Before Green Gables
- Kono Aozora ni Yakusoku wo
- Kono Koi wa Tsumi nanoka!?
- Kono Minikukumo Utsukushii Sekai (This ugly and beautiful world)
- Kono Mune Ippai no Ai wo
- Kono Naka ni Hitori, Imoto ga Iru!
- Kono Oto Tomare!
- Konodori
- Konohana Kitan
- KonoSuba: God's Blessing on This Wonderful World!
- Konoyo no Hate de Koi wo Utau Shojo YU-NO
- Konpeki no Kantai
- Konshu Tsuma ga Uwaki Shimasu
- Konya Hitori no Bed de
- Kore Ha Keihi De Ochimasen!
- Kore wa Koi no Hanashi
- Kore wa Zombie desu ka? (Is This a Zombie?)
- Korean Wave
- Korokoro Mameshiba
- Koroshiya-san
- Koryaku Wanted!
- Koshaku Reijo no Tashinami
- Koshoku Robot
- Kosoku Sentai Turboranger
- Kotetsu Sangokushi
- Koto no Ha no Niwa
- Kotoba Erabi Jiten
- Kotobazeme CD
- Kotodama Shoujo Project
- Kotoura-san
- Koukou Nyushi
- Koukou Yakyu
- Koupen-chan
- Kowarekake no Orgel
- Koya no Kotobuki Hikotai
- Koyomo Pearl Pink Series
- Koyomo setsugekka hana Series
- Koyomo setsugekka tsuki Series
- Koyomo setsugekka yuki Series
- KOYUDO Casual Series
- Koyudo CW Series
- Koyudo HQ Series
- KOYUDO Kakishibuzome Series
- KOYUDO La Fuga del Gatto Series
- KOYUDO limited Series
- KOYUDO Makiko Series
- KOYUDO Premium Series
- KOYUDO Vivid Series
- KOYUDO Yoshiki Series
- Kubire
- Kubo won't forgive me
- Kuchu Buranko (Flying Trapeze)
- Kuitan
- Kujibiki Unbalance
- Kuma Kuma Kuma Bear
- Kuma Miko: Girl Meets Bear
- Kuma no Gakko
- Kumamon
- Kumicho Musume to Sewa Gakari
- Kumo no Kaidan
- Kumodesuga, Nani Ka?
- Kunisaki Izumo no Jijyo
- Kunoichi Tsubaki no Mune no Uchi
- Kunon the Sorcerer Can See