When the cast first started acting in the series, they were all relatively new but have since moved on to become established actors taking on leading roles. Yamashita commented that he is very happy to be able to play Aizawa Kousaku again and reunite with his co-stars. Over the years, the number of helicopters equipped with medical equipment has grown from just 14 as at the point of Season 1 to 50 now so he hopes that more people will get to know about the Doctor Heli system through this drama. On the other hand, Aragaki who celebrated her 20th birthday while filming Season 1, expressed her joy to be able to play Shiraishi Megumi again in 7 years especially since this is the last year of her 20s.
In the latest installment, Aizawa who had left the emergency centre at Shohoku, is working as a neurosurgeon now and busy with operations every day. Shiraishi continues to work as a flight doctor at Shohoku which is facing a manpower crunch and is already the staff leader of the flight doctors team. Hiyama Mihoko (Toda) left Shohoku and becomes a gynecologist at a perinatal medical centre while Saejima Haruka (Higa) is still pursuing excellence as a flight nurse. Last but not least, Fujikawa Kazuo (Asari) is working as an emergency centre doctor specialising in plastic surgery and supports Shiraishi's team as well.
Filming will begin at the end of May and the supporting cast lineup will be announced at a later date.
Sources:Nikkansports / Sanspo / Yomiuri Hochi / Sponichi 1 / Sponichi 2 / Oricon