Phantasy Star II Text Adventures were a series of eight text adventure videogames available to users of Sega Meganet, a modem for the Sega Mega Drive in Japan, and later released as part of two compilations on the Sega Mega-CD. Each of the games takes place shortly before Phantasy Star II, documenting the backgrounds of its characters, and explaining what brings them to the town Paseo where they eventually team up to investigate the pervasive troubles of the Algol Solar System.

Anne's Adventure

Amy Sage (Japanese: アンヌ・サガ (Annu or Anne Saga)) has just finished her internship at the hospital in River Town, and has become a full-fledged doctor. Calm, yet strong-willed, she is dedicated in helping everyone who needs her medical aid. Her chapter takes place in the spring of AW 1284, shortly before the events of Phantasy Star II, giving the player some insight into why she became a doctor and decided to specialize in helping victims of Biomonster attacks.

[From Wikipedia]