Car racing anime, based on the manga by Kaoru Shintani that serialised in Big Comic Superior from 1988 to 1990.

Rokurou "Rock" Okajima has joined the Lagoon Company, a pirate mercenary group which operates out of Roanapur, Thailand. Despite his initial protests, this filthy slum of depraved souls and merciless criminals now serves as the former salaryman's home. Stranded, with nothing left of his past life but the clothes on his back and his inner morality, Rock is forced to perform jobs alongside the other members of the Lagoon crew. Berated for his lack of spine as he wades through the underbelly of society, he must decide whether to continue on amidst the gunfire and ruthlessness or risk everything he has in an attempt to be free. Whether he chooses the comfort of a familiar land or the freedom of being an outlaw, his decision will have lasting consequences on the crew who gave him a home.

Within Thailand is Roanapur, a depraved, crime-ridden city where not even the authorities or churches are untouched by the claws of corruption. A haven for convicts and degenerates alike, the city is notorious for being the center of illegal activities and operations, often fueled by local crime syndicates. Enter Rokurou Okajima, an average Japanese businessman who has been living a dull and monotonous life, when he finally gets his chance for a change of pace with a delivery trip to Southeast Asia. His business trip swiftly goes downhill as Rokurou is captured by a mercenary group operating in Roanapur, called Black Lagoon. The group plans to use him as a bargaining chip in negotiations which ultimately failed. Now abandoned and betrayed by his former employer, Rokurou decides to join Black Lagoon. In order to survive, he must quickly adapt to his new environment and prepare himself for the bloodshed and tribulation to come. A non-stop, high-octane thriller, Black Lagoon delves into the depths of human morality and virtue. Witness Rokurou struggling to keep his values and philosophies intact as he slowly transforms from businessman to ruthless mercenary.

High school student Ibuki Keita has been haunted by misfortune for as long as he can remember. For no apparent reason, everyone around him dies tragically. Ultimately, he refuses to become too close to anyone, even his childhood friend Akane. This leaves Keita alone in a life full of misery and disgrace. While eating at his favorite ramen shop one evening, Keita meets a strange young girl named Kuro. Possessing abilities that surpass that of a normal human being, Kuro classifies herself as a Mototsumitama. She explains to Keita about "Terra," a life-energy force split between three identical looking people; a global phenomenon dubbed the "Doppeliner System." As a Mototsumitama, Kuro guards the "Coexistence Equilibrium," the beings that protect the flow of Terra around the world. Keita refuses to believe her story, until he is caught up in the crossfire of this hidden world. On the verge of death, he makes a contract with Kuro, unbeknownst to its true meaning. Now he is bound to Kuro, and must be with her at all times. Could Keita's misfortune possibly get any greater?