If you remember a ghost

Have you ever tried to remember someone but they past away before your eyes? What if you didn't have any photos of the person that you wanted to remember but you couldn't? Well in: If you remember a ghost is a story about Shadow who is the brother of Shiula and one day something unexpected happens that Shadow died and now he is a ghost. Two years later.. Shiula doesn't ever remember him at all. When Shadow's turns into a ghost he starts looking for his sister. Shadow tries to enter the ghost world but can't because he needs one of his family members to remember him. Now he has to try his best to make his sister remember him. If that's even possible