A subproject of the I've Sound group featuring dual vocals KOTOKO and Kaori Utatsuki (詩月カオリ). Their first collaborative song was in 2002. Many of the songs produced from this collaboration were used in adult video games. The SHORT CIRCUIT series of albums (SHORT CIRCUIT, SHORT CIRCUIT II, and SHORT CIRCUIT III) primarily feature songs by these two vocalists. Their most recent collaboration was in 2008, after which both vocalists left I've Sound.
|1||Double HarmoniZe Shock!!||132 listeners|
|3||夏草の線路 -Album Mix-||94 listeners|
|4||SAVE YOUR HEART -Album Mix-||86 listeners|
|5||君と夢を信じて -音割れ修正版-||74 listeners|
|6||恋愛CHU! -Remix-||51 listeners|
|7||↑青春ロケット↑ -SHORT CIRCUIT II EDIT-||50 listeners|
|10||Double HarmoniZe Shock！！||21 listeners|