With only two episodes left for the popular drama “Descendants of the Sun,” viewers are wondering if the series will have a happy ending where the two main couples -- Song Joong-ki-Song Hye-kyo and Jin Goo-Kim Ji-won -- end up together happily ever after.

In the latest 14th episode that was aired Thursday, special forces Capt. Yoo Si-jin, played by Song Joong-ki, suffered a cardiac arrest following a deadly gun fight while on a mission. However, Yoo miraculously survived with the help of Dr. Kang Mo-yeon, played by Song Hye-kyo.

“I am sorry to make you worry, and thanks for saving me,” Yoo told Kang.

“I watched on the news today about the peace you protected. But if you are really sorry, please don’t turn up again covered with blood,” Kang said.

Kang sincerely took care of Yoo and near the end of the episode, the two decided to watch a film together inside a hospital room, sitting on the hospital bed. It was a film that the two were planning to watch together a number of times on previous dates but couldn’t.

Song Joong-ki and Song Hye-kyo in "Descendants of the Sun" (KBS2)

But they both fall asleep while watching. “I don’t know who fell asleep. It was an exhausting and long day and I was by his side,” Kang said in a voice-over narration. “I lay down and I sparkled, just like a woman being loved. I wonder whether the film, we could not finish, had a happy ending or a sad ending.”

After the episode, the teaser trailer of the next episode was released, featuring Yoo heading to somewhere far again on a mission, and his fellow soldier delivering an unknown, serious news to Kang, indicating something had happened to Yoo.

The uncertain narration and trailer is sparking a lot of speculation about the ending among viewers. “I am still nervous, but I am sure it will be a happy ending because Yoo already survived death many times,” one viewer said.

Jin Goo and Kim Ji-won (KBS2)

Another couple Seo Dae-young, played by Jin, and Yoon Myung-joo, played by Kim, decided to break-up after facing another obstacle and for the better of each other. The two are no longer together, but still think earnestly of each other.

“Descendants of the Sun,” airs Wednesday and Thursday at 10 p.m. on KBS2 network.

By Ahn Sung-mi (sahn@heraldcorp.com)