Ep. 12: Sel Darah Merah Mengemban Tugas Pelatihan Baru di Tengah Perubahan Tubuh
Tayang pada 23 September 2018

Red Blood Cell is assigned a new responsibility… To train a new Red Blood Cell! As the senpai, she has to be more anchored and reliable. But while trying to guide the new Red Blood Cell, she makes wrong turns, gets in trouble with the other cells, and things do not go the way she hopes… Meanwhile, there is something happening to the body that could change their world. (Source: Aniplex USA)
Episode
- Ep. 8 · Sel Darah Merah yang Bingung Arah Mencoba Perjalanan Sirkulasi Mandiri
- Ep. 9 · Sel T Pembunuh mengganggu Sel T Pembantu selama latihan, mengungkap masa lalu mereka bersama di Sekolah Timus.
- Ep. 10 · Sel darah merah bertemu monosit bertopeng saat melarikan diri dari bakteri Staphylococcus Aureus.
- Ep. 11 · Tubuh mengalami heatstroke karena suhu internal meningkat secara berbahaya.
- Ep. 12 · Sel Darah Merah Mengemban Tugas Pelatihan Baru di Tengah Perubahan Tubuh
- Ep. 13 · Sel Darah Putih menyelidiki sel darah yang hilang sementara Sel Darah Merah terus melakukan pengiriman oksigen.
- Ep. 14 · Terserang Flu Biasa