![Sekkekkyuu AA5100](https://cdn.noitatnemucod.net/thumbnail/400x400/100/7b212910708da5857389c30e4fa02c02.jpg)
Sekkekkyuu AA5100
赤血球 AA5100 / 先輩赤血球
AA5100 is AE3803's senpai and helps her find her way from time to time.
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Cells at Work!
Supporting (Role) TV -
Cells at Work!
Supporting (Role) ONA
![Endou, Aya](https://cdn.noitatnemucod.net/thumbnail/100x100/100/aeeac99aeb2a4dc09dc9b837e38c67ad.jpg)
Endou, Aya
Japanese![Buckland, Kira](https://cdn.noitatnemucod.net/thumbnail/100x100/100/f3cdb00bba1d25785ead2aa47cebaade.jpg)