Mei Nagano

Red Blood Cell

Takeru Satoh

White Blood Cell

Mana Ashida

Niko Urushizaki

Sadawo Abe

Shigeru Urushizaki

Koji Yamamoto

Killer T Cell

Riisa Naka

NK Cell

Wakana Matsumoto

Macrophage

Maika Pugh

Platelet

Shota Sometani

Helper T Cell

Kyoko Fukada

Hepatocyte

Rihito Itagaki

Red Blood Cell

Ryo Kato

Senior Red Blood Cell

Seishirou Katou

Shin Takeda

Ainosuke Kataoka

Pneumonia Coccus

Shinya Niiro

Streptococcus pyogenes

Maju Ozawa

Staphylococcus aureus

Haru Iwakawa

Leukemia Cell as Myelocyte

Ken Mitsuishi

Trucking Company President

Shingo Tsurumi

Doctor