Uchuu Bouken Shoujo Nami Davie Jones ~Umi no Akuma~

In 2991 in addition to speed of light space navigation humankind acquired the technology of hyper jump system (HJS) from ruins of ancient alien civilization. The government now succeeded in production of minimized versions of such hyper portals and one such device was planted in the suitcase of space delivery company pilot Nami.

[From vndbreview]