Wonderful Wonder World (manga)

Wonderful Wonder World (ワンダフル・ワンダー・ワールド) is a one-shot manga written and illustrated by Kei Monri. It was serialized in Weekly Shōnen Jump.

Plot
In a world where bounty hunters thrive and compete for the biggest catch, the "Dragon-Tiger Brothers" Ryu and Tora travel through space in search of high-dollar targets. They stop at absolutely nothing to gain more money to fulfill their ultimate dream, a dream stemming from a promise made with their younger sister. Their next target: a little princess being chased by the law for her alleged crimes. She promises them more money than the bounty on her head if the brothers help her escape. Now, utilizing their super-human combat abilities, they must now run from the law for helping the princess win her freedom.