Product brand
UnclaimedG.J? is an adult game brand of the Japanese company Tech Arts, known for titles illustrated by Toshihide Sano.
Last updated September 29, 2026
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Overview
G.J? (pronounced "Gee Jay") is an adult game (eroge) brand owned by the Japanese company Tech Arts. The brand name is an abbreviation of "Good Job?". It was established as the successor to Tech Arts' earlier brand Ripe, and like Ripe, all of its titles feature original artwork by Toshihide Sano. The brand's official website is hosted at teck.co.jp/gj/ and carries an age-restricted entrance. G.J? released its first title, Akiba-kei Kanojo, on October 24, 2003, and has since published a steady stream of adult games, often with "boin" (large-breast) themes in their titles, such as Ane to Boin, Tsuma to Mama to Boin, and Hime to Boin. Other notable releases include Futago no Bosei Honnou, Shichinin no Online Gamers, Queen Bonjol, Anata no Shiranai Kangofu, Majo Dou, Sano Toshihide ga, Anata no Senyou Gengaman ni Narimasu, Sex Life, Madonna Kanjuku Body Collection, Hyakki Yakou, Maid-san to Boin Tamashii, and 110: Sanfujinka Shikeishuu Byouin Jack. The brand is associated with the Hokkaido Eroge Kumiai and the Milky Label. G.J? remains active as a Tech Arts brand, with its most recent listed release in 2014.
History
G.J? is an adult game brand of the Japanese company Tech Arts. It was created as the successor brand to Tech Arts' earlier label Ripe. The brand name stands for "Good Job?". From its inception, the original artwork for all G.J? titles has been handled by Toshihide Sano, who also worked on Ripe. The brand's first release was Akiba-kei Kanojo on October 24, 2003. Over the following decade, G.J? published numerous adult games, frequently with titles incorporating the word "boin" (referring to large breasts), such as Ane to Boin (2004), Tsuma to Mama to Boin (2006), and Hime to Boin (2009). Other genres were also explored, including the online gamer-themed Shichinin no Online Gamers (2005), the nurse-themed Anata no Shiranai Kangofu (2007), the witch-themed Majo Dou (2008), and the strategy/tactical title Hyakki Yakou (2012). The brand's most recent listed release is 110: Sanfujinka Shikeishuu Byouin Jack, released on February 28, 2014. G.J? is associated with the Hokkaido Eroge Kumiai and the Milky Label. Its official website remains online with an age-restricted entrance.
Release of first title, Akiba-kei Kanojo.
Release of Futago no Bosei Honnou.
Release of Ane to Boin.
Release of Shichinin no Online Gamers ~Offline~.
Release of Tsuma to Mama to Boin.
Release of Queen Bonjol no! ~Joou wa Seifuku wo Nuida~.
Release of Anata no Shiranai Kangofu ~Seiteki Byoutou 24 Ji~.
Release of Majo Dou ~Ano Chirigiwa no Utsukushisa~.
Release of Hime to Boin.
Release of Sano Toshihide ga, Anata no Senyou Gengaman ni Narimasu.
Products and positioning
Adult game brand under Tech Arts, characterized by Toshihide Sano's artwork and titles often featuring large-breast themes.
Akiba-kei Kanojo
Futago no Bosei Honnou
Ane to Boin
Shichinin no Online Gamers ~Offline~
Tsuma to Mama to Boin
Queen Bonjol no! ~Joou wa Seifuku wo Nuida~
Anata no Shiranai Kangofu ~Seiteki Byoutou 24 Ji~
Majo Dou ~Ano Chirigiwa no Utsukushisa~
Hime to Boin
Sano Toshihide ga, Anata no Senyou Gengaman ni Narimasu
Sex Life ~SEX LIFE~
Madonna Kanjuku Body Collection
Hyakki Yakou
Maid-san to Boin Tamashii
110 ~Sanfujinka Shikeishuu Byouin Jack~
Sources3 sources
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