Valentine is one of three star systems in the Samurai Sector. it has a population of 2 million.

While its contains two worlds suitable for colonization, its proximity to the Mishhuvurthyar initially stalled Yamatai's desires to put civilians there.

The Yamatai Star Empire placed global communications networks of Emrys Satellites into orbit of all of the system's terrestrial worlds in YE 36. Civilian cargo shipping is primarily provided by Trinary Star Shipping, which has storefronts in all of the planet's major cities.

Site of Fort Shizuka.

The Akarui Star Fortress is stationed on the outskirts of the Valentine system.

In YE 33 the Yamatai Star Empire constructed 500 Refugee Towns, capable of supporting 9,200,000 people with additional overflow capability in the form of tent cities if necessary. This was done to ensure the welfare of displaced persons from the former Yamataian colonies in the United Outer Colonies. By YE 38 the camps' residents had returned to Jiyuu System and the camps were closed.

Valentine is part of the PAINT mass transportation system and has a terminal operated by the Star Army of Yamatai. It has a flight to Amatsu-Yamatai, Yamatai (Planet) every two hours.