Marisa wants to borrow some books from Patchouli's library as usual. But this time she has triggered a special magic circle trap. It shrank her body and clothes. In order to return the normal size, Marisa must survive in the huge Scarlet Devil Mansion!

Marisa wants to borrow some books from Patchouli's library as usual. But this time she has triggered a special magic circle trap. It shrank her body and clothes. In order to return the normal size, Marisa must survive in the huge Scarlet Devil Mansion!