ギャラクシーエンジェル
A sequel series to the original trilogy, "Galaxy Angel II", came out exclusively on the PS2 and followed a different cast of characters. The three games in the sequel series are called "Galaxy Angel II: Zettai Ryouiki no Tobira", "Galaxy Angel II: Mugen Kairou no Kagi", and "Galaxy Angel II: Eigou Kaiki no Toki", released in that order.