Happiness is the Password ~Yes! Happiness Charge!~ (幸せの合い言葉 ~Yes!ハピネスチャージ!~ Shiawase no Aikotoba ~Yes! Hapinesu Chāji!~?) is a group song sung by the voice actors of Aino Megumi, Shirayuki Hime, Omori Yuko and Hikawa Iona.
Happiness is the Password ~Yes! Happiness Charge!~ (幸せの合い言葉 ~Yes!ハピネスチャージ!~ Shiawase no Aikotoba ~Yes! Hapinesu Chāji!~?) is a group song sung by the voice actors of Aino Megumi, Shirayuki Hime, Omori Yuko and Hikawa Iona.