Cobra is a space-opera manga series written and illustrated by Buichi Terasawa of the Black Sheep studio, originally appeared in serialized form in the Japanese shonen manga magazine Weekly Shonen Jump from 1978 to 1984. The individual chapters were collected and published in 18 tankobon volumes by Shueisha. The series follows the adventures of Cobra who lived an ordinary life until enemies started to hunt him down. Cobra surgically alters his face, and erases his own memory to hide from his enemies. Cobra starts to regain his memories and then unites with his old partner Lady Armaroid, and his ship Tortuga. Later in his adventures, Cobra meets the Royal sisters whose map-tattoos lead to treasure.