Black Lagoon Omake

Rock finds himself in a high school world.

Revy becomes a magical girl, and gives Rock some questionable help.

Balalaika has trouble raising Hansel and Gretel.

Rock finds himself in a world where boys and girls have swapped genders. He is now a woman, and from there things get worse.

The gang tells each other spooky stories.

Rock finds himself back in high school, and discovers the others around him have had trouble with their childhood.