When lazy, erotic-game loving Mahiro Oyama is transformed into a girl by his younger scientist sister's experiments, he becomes determined to change back, only to recognize that with his new opportunity, he may want to turn his life around.

• Marika Kouno
• Kaori Ishihara
• Hisako Kanemoto
• Minami Tsuda
• Kana Yuuki
• Natsumi Hioka