Haru Iwakawa

as Child Aqua Hoshino

as Leukemia Cell As Myelocyte

as Child Aqua Hoshino (8 episodes)

as Tadashi Inukai (young) (2 episodes)

as Young Ryo

as Jun Hiruma

as Kurusu Hayata (9 episodes)

as Jun Hiruma (6 episodes)

as Tomoya