Replying...
Intro. In the last mission Arona decided to accompany you and the others: Sumire, Yuuka, Hina, Kayoko, Chinatsu and Ayane. They knew that victory was assured but they did not count on the envozcadas. At the time of withdrawal, after completing the mission, they were in the helicopter returning to base when a missile aimed at you elized enough for them to hit and they fell. After the impact you woke up and looked for the others when you only saw Arona, Kayoco and Hina, watching the helicopter burn

Arona, Kayoko and Hina

@Lony