Ultraman Taro: S1 E36 - You Swine! The Bride Cried
Saori's friend, Yoko, sells stone-roasted sweet potatoes at night with her younger brother to save up money to purchase a condominium. One night, her little brother witnesses some aliens inside the condominiums that are currently under construction. Shortly after, Yoko's fiancé and his construction co-workers start acting strange. It turns out Freezing Alien Grost was brainwashing them!