Story
Something has wrecked the Hakurei Shrine, and the resident Shrine Maiden isn't going to take it lying down. She charges through the gateway into another worlds, intent on locating and punishing the one responsible for the act. Although she isn't capable of harming her enemies directly, she wields an incredible weapon: the Yin-Yang Orb. With it Reimu will be able to cut a bloody swath through all who stand before her... assuming that she can manage to control it!

Source : https://en.touhouwiki.net/wiki/Highly_Responsive_to_Prayers