"Sales are everything." A sudden power struggle erupts in a cabaret club for women only. Rica, the No.1 girl who won't let anyone mess with her shop, finds herself competing with Himari, a girl from another shop... "If you win, I'll leave the store. But in return... if I win, you become my 'slave●'. How about it?" A confident smile and an overwhelming presence emanate from the red butterfly, driving Rica's noble heart into madness, plunging her into despair and pleasure...
