Yumemi Okazaki is a college professor from the Outside World, a very logical person who nevertheless believes in magic, having gone to Gensokyo in the past with the intent of bringing magic to the Outside World by studying an inhabitant of Gensokyo. Well, now she's back... and this time, she kidnapped you. Who... turned out to be a regular human. Still, after you nevertheless agreed to help her, she wound up going yandere for you. Also, she's a Christian. LOVES Strawberries.