| I Became a Legend after My 10 Year-Long Last Stand | July 6, 2026 | — | 12 |
| I Couldn’t Become a Hero, So I Reluctantly Decided to Get a Job | October 5, 2013 | Tokyo MX, AT-X | 12 |
| I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too | April 7, 2023 | — | — |
| I Left My A-Rank Party to Help My Former Students Reach the Dungeon Depths! | January 12, 2025 | — | 24 |
| I Lost My Adventurer's License, but It's Fine Because I Have an Adorable Daughter Now | January 2027 | — | — |
| I May Be a Guild Receptionist, But I'll Solo Any Boss to Clock Out on Time | January 11, 2025 | — | 12 |
| I Parry Everything | July 5, 2024 | — | 12 |
| I Saved Myself with a Potion! | October 3, 2025 | — | 12 |
| I Shall Survive Using Potions! | October 8, 2023 | — | 12 |
| I Was Reincarnated as the 7th Prince so I Can Take My Time Perfecting My Magical Ability | April 2, 2024 | — | 12 |
| I'm a Behemoth | January 4, 2025 | — | 12 |
| I'm a Curse Crafter, and I Don't Need an S-Rank Party! | — | — | — |
| I'm Dating a Dark Summoner | October 5, 2026 | — | — |
| I'm Giving the Disgraced Noble Lady I Rescued a Crash Course in Naughtiness | October 4, 2023 | — | 12 |
| I'm Gonna Be An Angel! | April 7, 1999 | TV Tokyo | — |
| I'm Quitting Heroing | April 5, 2022 | — | 12 |
| I'm Standing on a Million Lives | October 2, 2020 | — | 12 |
| I'm the Villainess, So I'm Taming the Final Boss | October 1, 2022 | — | 12 |
| I've Been Killing Slimes for 300 Years and Maxed Out My Level | April 10, 2021 | — | 24 |
| I've Somehow Gotten Stronger When I Improved My Farm-Related Skills | October 1, 2022 | — | 12 |
| If It's for My Daughter, I'd Even Defeat a Demon Lord | July 4, 2019 | — | 12 |
| Ikki Tousen | July 30, 2003 | — | 49 |
| Immoral Guild | October 5, 2022 | — | 12 |
| In Another World With My Smartphone | July 11, 2017 | AT-X | 24 |
| In the Land of Leadale | January 5, 2022 | — | 12 |
| Intrigue in the Bakumatsu – Irohanihoheto | October 6, 2006 | — | 26 |
| Inukami! | April 6, 2006 | TV Tokyo | 26 |
| Inuyasha | October 16, 2000 | Nippon Television Network System | 167 |
| Irina: The Vampire Cosmonaut | October 4, 2021 | — | 12 |
| Is This a Zombie? | January 11, 2011 | — | 22 |
| Isekai Quartet | April 10, 2019 | Tokyo MX | 24 |
| Ixion Saga DT | October 8, 2012 | — | — |
| Izetta: The Last Witch | October 1, 2016 | — | 12 |
| Jack-of-All-Trades, Party of None | January 4, 2026 | — | 12 |
| Jibaku-kun: Twelve Worlds Story | October 5, 1999 | — | 26 |
| Jing: King of Bandits | May 15, 2002 | NHK Satellite 2 Television | 16 |
| Jungle de Ikou! | — | — | — |
| Juuni Senshi Bakuretsu Eto Ranger | April 7, 1995 | NHK Satellite 2 Television | 39 |
| K.O. Beast | — | — | 7 |
| Kabaneri of the Iron Fortress | April 8, 2016 | Fuji Television | — |
| Kagurabachi | April 2027 | — | — |
| Kaiju No. 8 | April 13, 2024 | — | — |
| Kaina of the Great Snow Sea | January 12, 2023 | Fuji Television | 11 |
| Kaleido Star | April 4, 2003 | TV Tokyo | 51 |
| Kamichu! | June 29, 2005 | TV Asahi | — |
| KamiKatsu | April 6, 2023 | — | 12 |
| Kamisama Kiss | October 1, 2012 | — | 25 |
| Kannazuki no Miko | October 1, 2004 | — | 12 |
| Kanokon | April 5, 2008 | AT-X | 12 |
| Kanokon: Manatsu no Daishanikusai | October 4, 2009 | — | 2 |
| Kanon | 2002 | Fuji Television | 13 |
| Kanon | October 5, 2006 | TBS Television | 24 |
| Karakuri Circus | October 11, 2018 | Tokyo MX, Nippon BS Broadcasting | 36 |
| Karneval | April 3, 2013 | — | 13 |
| Katana Maidens: Toji No Miko | January 5, 2018 | — | 24 |
| Kaze no Stigma | April 12, 2007 | — | 24 |
| Kekkaishi | October 16, 2006 | Cartoon Network, Nippon Television | 52 |
| Kemono Michi: Rise Up | October 2, 2019 | — | 12 |
| Kenyū Densetsu Yaiba | April 9, 1993 | TV Tokyo | 52 |
| Kero Kero Chime | March 6, 1997 | — | 30 |