Ryuguden
Variant Titles: Castle of the Dragon; 龍宮殿
Genres: Surreal, Fantasy, Psychological, Seinen
Year: 2002-2005
Published in: Ikki (Shogakukan)
Volumes: 3
Chapters: 29
Mangaka: MATSUNAGA Toyokazu (松永 豊和)
Rating: 7.6/10 (12 votes)
Groups: Mangascreener
Resources: MangaUpdates, MyAnimeList, ANN

Description
Two brothers wearing bunnysuits hop on a phallic train and travel to a mysterious underwater brothel.

The story is very surreal and deranged in an Alice-in-Wonderland kind of way. The art style is quite original and seems influenced by European comics, in particular the likes of Jean Giraud.

Original upload and description by Midhras.