Kaminaki Sekai no Onee-chan Katsudou

A sister possessing extraordinary strength seeks her missing brother in a world devoid of religion. The brother disappeared after a ritual performed by their former cult transported him to another realm. Unbeknownst to him, the same ritual led to his sister's pursuit, as she follows him into this new world. The sister, Chiyomaru Urabe, wields immense power derived from the deity Mitama. She hopes this ability will help her locate her brother in a faithless world shaped by Shinya Murata. As she navigates this unfamiliar land, she must rely on her strength to uncover the truth and reunite with her sibling.