Ep. 9: Sel T Pembunuh mengganggu Sel T Pembantu selama latihan, mengungkap masa lalu mereka bersama di Sekolah Timus.
Tayang pada 2 September 2018

In the middle of a drill, Killer T Cell accidentally tosses a trainee right into Helper T Cell’s office, hitting the commander. The two polar opposites begin arguing. According to Dendritic Cell, although they play very different roles now, the two were actually classmates at Thymus School. Dendritic Cell also reveals how different both of them were back then! What could've happened between the two, as they must’ve endured the hellish training days together at Thymus School, where only 2-3% of the class makes the cut!? (Source: Aniplex USA)
Episode
- Ep. 5 · Sel Darah Putih Bertemu Sel Memori di Tengah Invasi Serbuk Cedar
- Ep. 6 · Young Erythroblast berlatih di bawah bimbingan Macrophage namun tersesat saat melakukan latihan evakuasi bakteri.
- Ep. 7 · Sel Darah Putih dan sekutunya menghadapi identitas asli Sel Kanker yang terungkap
- 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.