Touhou Jaseishou: The Last Comer

Written by Milka Oyasu, the religion of Christianity features as its main theme. A star has fallen into Gensokyo, setting aflame the forest and the cherry trees, and simultaneously, a mysterious light has appeared in the sky. Reimu Hakurei, Marisa Kirisame, and Sakuya Izayoi go out to investigate the cause of these strange occurrences.