38 titles- Amaria Road Story (Tokyo: Asahi Sonorama, 1999)
- Aoba yo, Yutakanare ["Green Leaves, Get Rich"] (Tokyo: Hayakawa Bunko, 2018-2019)
- Aureria Tō ["Aureria Series"] (Tokyo: Hayakawa Bunko, 2010)
- Dairoku Tairiku ["The Sixth Continent"] (Tokyo: Hayakawa Bunko, 2003)
- Earth Guard (Tokyo: Asahi Sonorama, 1997)
- Entotsu no Ue ni High Heel ["High Heels on a Chimney-top"] (Tokyo: Kōbunsha, 2009)
- Final Seeker: Rescue Wings (Tokyo: MF Bunko, 2005)
- Free Lunch no Jidai ["Free Lunch Era"] (Tokyo Hayakawa Bunko, 2008)
- Fukkatsu no Chi ["Land of Resurrection"] (Tokyo: Hayakawa Bunko, 2004)
- Fuzen Sekai no Sōzōte ["Creator of an Incomplete World"] (Tokyo: Asahi Novels, 2008)
- Giant Ark (Tokyo: Hayakawa Bunko, 2014)
- Gibraltar Kōbōsen ["Battle of Gibraltar"] (Tokyo: Tokuma Shoten, 2005) with Miyako Morifuku, Nobuyoshi Yokoyama, and Yūto Ramon
- Grey Chamber (Tokyo: Shūeisha, 2000)
- Gunjō Shinden ["Ultramarine Temple"] (Tokyo: Asahi Sonorama, 2002)
- Hakubutsu Senkan Unveil ["Museum Ship Unveil"] (Tokyo: Asahi Novels, 2010)
- Highwing Stroll (Tokyo: Asahi Sonorama, 2004)
- Hito de aru Hito to nai Hito to ["With a Person Who Both Is and Isn't a Person"] (Tokyo: Hayakawa Bunko, 2015-2016)
- Hitsuji to Saru to Hyakukiku no Ginga ["A Galaxy of Sheep and Monkeys and Many Small Quantities"] (Tokyo: Hayakawa Bunko, 2011)
- Icarus no Tanjōbi ["Birthday of Icarus"] (Tokyo: Asahi Sonorama, 2000)
- Kikaijikake no Shosokutachi ["Mechanical Sons"] (Tokyo: Hayakawa Bunko, 2011)
- Kochira Yūseishō Tokuhaika ["This is the Postal Ministry Special Dividend Section"] (Tokyo: Asahi Sonorama, 1999, 2001)
- Kokohore One-One (Tokyo: Shūeisha, 2001, 2002)
- Kyōsuku Senkan Medūshin ["Hospital Ship Medūshin"] (Tokyo: Asahi Sonorama, 2002, 2003)
- Kyūseigun ["Salvation Group"] (Tokyo: Hayakawa Bunko, 2010)
- Lord of the Sands of Time (San Francisco, California: Viz Media/Haikasoru, 2009)
- Many Many Sheep (Tokyo: Hayakawa Bunko, 2009)
- Mazu Ippō Popular Press Yori ["First, A Letter From Popular Palace"] (Tokyo: Shūeisha, 1996, 1998)
- Michibiki no Hoshi ["Guiding Star"] (Tokyo: Haruki Bunko, 2002, 2003)
- The Next Continent (San Francisco, California: Viz Media/Haikasoru, 2010)
- Rainbow Planet (Tokyo: Enix, 2002)
- Rō Vár no Wakusei ["Old Vár Planet"] (Tokyo: Hayakawa Bunko, 2005)
- Shinsekai Herb C ["New World Herb C"] (Tokyo: Hayakawa Bunko, 2013)
- Shissō: Sen Mile Kyukō ["Dash! Thousand Mile Express"] (Tokyo: Asahi Sonorama, 2005)
- Shukuen ["Tavern Grudge"] (Tokyo: Hayakawa Bunko, 2012)
- Tengai no Toride ["Skyline Fortress"] (Tokyo: Hayakawa Bunko, 2009)
- Tenkō Tsubasa no Tenshi: Jewel Box Navigator (Tokyo: Haruki Bunko, 2000)
- Toki Suna no Ō ["Lord of the Sands of Time"] (Tokyo: Hayakawa Bunko, 2007)
- Tsuishin: Kochira Tokubetsu Haidatsuka ["PS: This is the Special Delivery Section"] (Tokyo: Asahi Sonorama, 2001)