to retreat further into the Eternal World. If Kōhei forms a strong bond with one of the girls, she alone remembers him even after he leaves to the Eternal World. This ensures his eventual return one year later when he and the girl reunite. Development and release One: Kagayaku Kisetsu e is Tactics' third title, after Moon and Dōsei. One'''s production was headed by YET11, the pseudonym of Tsutomu Yoshizawa, who also contributed to the music in the game. Planning was led by Jun Maeda, who worked on the scenario with fellow writer Naoki Hisaya. Maeda wrote the scenarios for Mizuka, Rumi and Mayu, while Hisaya wrote the routes for Misaki, Mio and Akane. Art direction was done by Itaru Hinoue who also worked on the computer graphics along with artists Miracle Mikipon and Shinory. In addition to YET11, the soundtrack was composed by Shinji Orito, OdiakeS, M.S. and Ishisan.One was first released on May 29, 1998 in regular and limited edition versions playable on Windows PCs in CD-ROM format; the limited edition included the game's first original soundtrack. Both the limited and regular editions of the original game contained no voice acting. A promotional video for the game is still available for download at Tactics' One website. On April 1, 1999, KID released an all ages version in regular and limited editions playable on the PlayStation under the title Kagayaku Kisetsu e; the PS version contained full-voice acting. On September 14, 2000, AI System released One: Kagayaku Kisetsu e Memorial Selection, which was essentially the original game, though the price was cheaper at a little less than half the original price. On January 1, 2003, a full voice version of the Windows game was released by Nexton. Kōhei was not voiced in any of the versions. Kawamoto Industrial released a version playable on FOMA mobile phones on February 9, 2007. Magicseed released two versions without adult content: one playable on au mobile phones on March 1, 2007, and the other playable on SoftBank 3G mobile phones on July 2, 2007. The final release by Nexton was on June 1, 2007 as a Windows Vista compatible edition for the PC. Gyutto released the full-voice, Vista-compatible edition of One as a downloadable version on February 26, 2010, and DMM also made it available as a downloadable version on June 15, 2010. Regolith Innovation released a version playable on Android devices through