The Body X That Came From Space - S1.E24

Oasis is revealed to be of a species spawned by Gekka thousands of years ago. Meanwhile Gekka must stop her offspring who want to rebel against her for abandoning them with only the lonely alien as their God. The family meets a worshipper of Kyouka who is unbeknowst to them possessed by a child of Gekka. Chika and Yuuka's big sister is revealed to be Electric Butterfly's boss and declares war on the all powerful bumbling alien.