Lilies bloom in the park at midnight. By the way, the character for lily is read as "baka" (fool/idiot)⁉

An ordinary girl who loves anime, Misawa Hanshoko, discovers a mysterious box in a park late one night. The box has the words "Please do not press" written on it, and surprisingly, it has breasts attached to it. In her late-night excitement, Hanshoko ends up pressing the breasts anyway. Then, an arm extends from the box, and a voice says, "I've caught you. My master..." What will happen to Hanshoko, who was just an ordinary girl?