Star Ocean is a JRPG series developed by Tri-Ace. The series is a sci-fi, futuristic action rpg system, that plays somewhat similar to the Tale of franchise, where you, the player move around on the battlefield defeating your enemies using preset moves, relying on mana points. Reception to the earlier titles, 1 and 2 was very positive. Star Ocean 3 saw a more mixed reaction, as did 4. Early results on Star Ocean 5 are mixed from what I understand. Fan service is not the point of the game, as the story is usually some sort of intra galactic romp, where you travel to various planets to save planets, or the galaxy.
Unlike games developed by Gust, and Compile Heart, Star Ocean is a more serious JRPG series, with very very mild fanservice.
Do you want to look at an underage girls panties? Go play Neptunia, and stop bitching about this you little saber rattler.