ルナ・ウイング：時を越えた聖戦/ Lunar Wing: Toki wo Koeta Seisen

Lunar Wing - Toki wo Koeta Seisen is a love-themed strategy RPG in which players take part in battles using the game's active time simulation battle system while attempting to earn the affection of bishojo ( used to refer to young and pretty girls, usually below university age) characters.

The player (Le Zion) is a commander of a flying vessel and you have to spend all the time traveling from one place to another in the land of Sera, talking with girls and convincing them to join your party. From time to time each one of them will close you in a room and try to corrupt your innocence.You also have to save the world in epic battles against the evil in your (few)free time