IKUNA-010+「IKUNA #14.0」Mao Hamasaki vs. Rainbow Group+The biggest GAMANKO showdown in the sexy world+The ultimate "big showdown" of sexy maniacs! +The climax showdown between AV stars who keep squirting in pursuit of climax, "IKUNA" Season 4! The climax after enduring the climax will be ecstatic! Did he faint? Are you incontinent? Who is the best climax queen? "The magician of sound and tide" Ayumi Hamasaki VS "The rainbow in everyone's heart" Rainbow Group