In late 2009, Ikezawa Haruna started plans to make a "Vocaloid for Mac", and she enlisted the help and services of Gomoku to start drafting ideas and designs for a character they named "Macne Miku". In the first volume of Macne:bon, Gomoku showed these designs and ideas for a character that slightly resembled the Vocaloid, Hatsune Miku.
Gomoku had worked on many other projects as the main character designer or artist. A few of these projects no longer exist, or there is sparse information about them.
TAP San-Nin-Musume (TAP三人娘?) is an UTAU project with art by Gomoku, the three sisters had a contest/lottery draw for picking the voice actor to record. Currently, there has been no new information since 2013.
GUNBARICH (ガンバリッチ,Ganbaritchi?) is a Breakout clone arcade video game developed and published by Psikyo. Originally released for the arcades in 2001, it was later ported to the Nintendo Switch by Zerodiv in 2017.
Daybreak Illusion (幻影ヲ駆ケル太陽,Gen'ei o Kakeru Taiyō?) is an original anime series produced by AIC and Aniplex. The series aired in Japan between July and September 2013, and was simulcasted by Crunchyroll. A manga adaptation was serialized in the June 2013 issue of Square Enix's online magazine, Gangan Online. A light novel adaptation written by Michiko Itō, with illustrations by Gomoku Akatsuki, was serialized from June 10, 2013 in the monthly magazine Newtype, published by Kadokawa Shoten. The story follows a group of magical girls whose powers and personalities are based on the major arcana as they fight monsters born from humans that succumbed to despair.
Buster Police (バスターポリス 百花繚乱,Basutā Porisu Hyakkaryōran?) was a voice acted drama. Not much is known about this series, other than a few tidbits of info from Gomoku's news page. All links surrounding this series are dead, except for links to a few blogs.
Final Romance 4 (ファイナルロマンス4,Fainaru Romansu 4?) is a mahjong game published by Video System for the Sega Saturn, and is the third game in the series released for the Saturn, after Idol Mahjong Final Romance 2 and Idol Mahjong Final Romance R.
X-MARKET was a magazine that Gomoku did the cover art for a few volumes in the late 90's.