Starlight Scramble Ren'ai Kouhosei (OVA) (1998)

In the near future, a space station is under attack by terrorists, during which Megumi loses her parents and almost dies herself were it not for a boy who manages to save her. Fast forward a few years and Megumi has now enlisted into her grandfather's military academy. There she meets a young man who looks very familiar. Could it be the boy who had saved her life?