Wanting to find her own individuality, Yume and the others go searching for seven "luckies" around the school said to grant wishes. Meanwhile, Yuzu invites her childhood friend, Lily Shirogane, to come see her solo concert, asking her to perform as well. As Yume and the others struggle to find the final lucky, the Tundra Diva, they learn that her identity is Lily herself, who is a second-year student due to return to school. Having found all seven luckies, the girls realise individuality is something they need to find for themselves.