Original sentence: In February 1999, Nintendo published Sound Picture Box Mewtwo, which included the CD drama Myutsuu No Tanjou: Pocket-Monster Radio Drama (Birth of Mewtwo: Pokémon Radio Drama)
Edited sentence: In September 1999, Nintendo published Sound Picture Box Mewtwo, which included the CD drama Myutsuu No Tanjou: Pocket-Monster Radio Drama (Birth of Mewtwo: Pokémon Radio Drama)