Yui Ishikawa, Daisuke Namikawa, Takehito Koyasu, Aya Endo, Koki Uchiyama, Minori Chihara, Haruka Tomatsu, Azusa Tadokoro, Subaru Kimura, Satoshi Taki, Sumire Morohoshi, Ayako Kawasumi
An emotionally scarred former child soldier becomes a letter writer in this condensed recap of the moving, gorgeously animated award-winning series.