

Episode 4: “Oversaturation Kill Box”
- 4 of 5
- 33 min
- Aired
From Acino, the anime encyclopedia
| Series | Black Lagoon: Roberta's Blood Trail |
|---|---|
| Episode | 4 of 5 |
| Episode length | 33 min |
| Studio | Madhouse |
| Previous episode | Episode 3: “Angels in the Crosshairs” |
| Next episode | Episode 5: “Codename Paradise, Status MIA” |
| Streaming | Crunchyroll, Netflix, Hulu |
“Oversaturation Kill Box” is episode 4 of the anime Black Lagoon: Roberta's Blood Trail.
Summary
A summary of this episode has not been written yet.
Music in this episode
- ED 1“When Johnny Comes Marching Home” — EdisonAnimeThemes
Where to watch
Streaming services that list Black Lagoon: Roberta's Blood Trail. What you can watch depends on your country. Acino does not host any video; each link leads to the service's own page.
Episode guide
About the series

Black Lagoon: Roberta's Blood TrailOVA · 2010 · 5 episodes · Madhouse · ★ 8.03
Black Lagoon: Roberta's Blood Trail is a 2010 Japanese anime original video animation based on the manga series by Rei Hiroe. It is animated by Madhouse. It aired from June 27, 2010 to June 22, 2011, with 5 episodes.
Read the article →References
- “Black Lagoon: Roberta's Blood Trail”. Kitsu. Retrieved October 22, 2026.
- “Black Lagoon: Roberta's Blood Trail”. MyAnimeList. Retrieved October 27, 2026.
- “Black Lagoon: Roberta's Blood Trail”. AnimeThemes. Retrieved October 23, 2026.
Episode titles and air dates come from Kitsu. The summary is written by Acino with AI assistance and checked so that it does not copy other sites.