Compilation of popular vocaloids Kagamine Rin and Len. Includes popular tracks such as "Roshin Yukai," "Migikata no Cho," and "Ikasama <=> Casino." In addition to that, this CD includes tracks newly made by great vocaloid producers such as iroha (sasaki) and Garuna (Owata P). Cover artwork is newly drawn by Buta. Double disc packed in a special sleeve packaging.