[7] Most of its developed video games are commonly released for Microsoft Windows, Sega arcade systems, and PlayStation consoles.

Characters for his project were sourced from To Heart, while the system mechanics were based on Asuka 120%, a game that served as an influence for Narita and his team.

[8][9] The Queen of Heart series sold about 100,000 copies, and Watanabe Seisakujo became one of the most popular dōjin game developers.

He decided to stop creating unlicensed games, and start fresh with French-Bread (フランスパン, Furansu Pan).

Narita and the game developer's sprite artist Seichi Yoshihara has helped in designing battle suits for said novel series.