AIKa R-16: VIRGIN MISSION

Aika is a high school student who earned a C-class salvager's license despite her youth and impulsive nature. Her hot-headedness causes others, like Gota, to view her as a child, making it difficult for her to find work. To gain clients, she places an ad at her school and catches the attention of Erika, a wealthy girl and leader of the treasure hunting club. Erika hires Aika for a salvage mission at sea, which Aika eagerly agrees to. However, when she sees the advanced submarine on Erika's private ship and learns the mission's true nature, she becomes concerned. The mission leads to a confrontation with a group of high school girls on the southern islands. A mysterious girl named Karen is introduced, marking the start of Aika's new challenge.