A year has passed since Menma's ghostly return to the Super Peace Busters. Although the time they spent together during that summer was short, the five members reminisce about what happened as they each write a letter to their lost friend.
入野自由
as Jinta "Jintan" Yadomi (voice)
茅野愛衣
as Meiko "Menma" Honma (voice)
戸松遥
as Naruko "Anaru" Anjo (voice)
櫻井孝宏
as Atsumu "Yukiatsu" Matsuyuki (voice)
早見沙織
as Chiriko "Tsuruko" Tsurumi (voice)
近藤孝行
as Tetsudo "Poppo" Hisakawa (voice)
田村睦心
as Young Jintan (voice)
瀬戸麻沙美
as Young Yukiatsu (voice)
豊崎愛生
as Young Poppo (voice)
小形満
as Atsushi Yadomi (voice)
水原薫
as Satoshi Honma (voice)
大原さやか
as Touko Yadami (voice)
