The Shion Twins, Shion Gear and Linear, arrived at the Crypton Mansion along with their parents, Shion Kaito and Miku. The two discovers a dusty diary hidden in the attic. The Diary was written by a previous Vocaloid named Kagamine Len who wrote a Journal about him and his older twin sister, Kagamine Rin, travelling 12 Worlds connected to their own. While in the real world, a mysterious girl in the attic steals the diary and their parents and everyone else worried about them. Will Gear and Linear learn the Secret of Kagamine Rin and Len?
3 parts