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| Kazoku Keikaku ~Soshite Mata Kazoku Keikaku o~ | 2004-07-30 | 7.90 (168) |
| Kazoku Koukan Ane-Haha-Imouto | 2005-07-01 | 6.40 (77) |
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| Kazoku Koukan Side Stories | 2005-07-01 | - (3) |
| Kazoku o Shokusu to Iu koto | 2009-10-23 | 5.90 (37) |
| Kazoku to Watashi to Neko Cafe -Factis- | 2018-12-07 | - |
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| Kazoku ~Haha to Shimai no Kyousei~ | 2019-09-27 | 7.90 (306) |
| Kazuki Inase | 2025-04-06 | - |
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| Keda | - | - |
| Keda Kare ~Kemono Danshi no Shitsukekata~ | 2015-09-11 | 6.20 (10) |
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| Kedamono no Arashi | 2010-08-15 | - |
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| Keep It Smooth, Elliot! | 2024-07-14 | - (3) |
| Keep Tryin' | 2017-08-13 | - (1) |
| Keep Tryin' 2 | - | - |
| Keep in touch | 2017-11-22 | - (1) |
| Keep or Kill | 2025-06-08 | - (1) |
| Keeper of the Siren Song | - | - |
| Keepers 1: Revolution | - | 7.00 (18) |
| Keepers 2: Shattered Realms | 2026-03-28 | 6.90 (6) |
| Keepers of Astraela | - | - (2) |
| Keepers: Fractured Realities | - | - |
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