Professor Shiro Sakaki, a butterfly researcher, confesses to turning six young boys, including his own son Itaru, into "human specimens."
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Hidetoshi Nishijima
Professor Shiro Sakaki
Somegoro Ichikawa
Itaru Sakaki
Rie Miyazawa
Rumi Ichinose
Aoi Ito
Anna Ichinose
Towa Araki
Toru Shirase
Jyutaro Yamanaka
Hikaru Akabane
Kodai Kurosaki
Sho Ishioka
Leo Matsumoto
Ao Fukazawa
Ikuho Akiya
Dai Kuroiwa
All 5 episodes plotted by IMDb rating
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5 episodes • 2025Avg: 6.2Golden Era
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Episode 1 | Dec 19, 2025 | 6.0 |
| 2 | Episode 2 | Dec 19, 2025 | 6.0 |
| 3 | Episode 3 | Dec 19, 2025 | 6.0 |
| 4 | Episode 4 | Dec 19, 2025 | 6.0 |
| 5 | Episode 5 | Dec 19, 2025 | 7.0 |
