Hana, an idol, falls off a ship while on a trip to an island. Suddenly she finds herself surrounded in a dangerous environment and gets saved by a dark-skinned woman. Unable to communicate with each other, Hana has no choice but to follow that woman. What will become of Hana? (Source: MangaDex)

Frontier was a web comic submitted to Jump Rookie which was officially released on Shounen Jump+ after it won the Bronze Rookie Award for March 2017.