Story(Eien no Aselia)

Branching
First branching point: Chapter III - The Visitors, 10th turn of Mission 14: Defend Ransa

Aselia、Esperia、Orpha、Lesteena、Uruka routes have been decided by this point. At this first branching point you‟ll see a specific event. For the most part, you can easily tell which ending you are headed for just by the heroine that this event features.

Second branching point: Chapter IV - Desire and Oath, after Mission 21: Defeat Shun and rescue Kaori

This branching point only matters on subsequent playthroughs, and only for Kyouko and Tokimi.

If conditions for getting the endings of multiple heroines are achieved at the same time, you get the ending for the heroine with higher priority. The priority chart is as follows:

Aselia > Esperia > Orpha > Kyouko = Tokimi > Lesteena > Uruka

Mission 17: Stop the Exodus of Mana
Chapter IV - Desire and Oath