It appears Angelina Jolie's upcoming directorial film "Unbroken" is going to be a very powerful movie. One of the film's actors recently revealed that he actually threw up and "couldn't stop crying" from the intensity of the film's making.

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Japanese pop star Miyavi, real name Takamasa Ishihara, who Jolie cast as cruel sergeant Matsuhiro Watanabe in "Unbroken", revealed about his distressing experience on set while working on the film.

Miyavi played a man inside a prisoner-of-war camp where Olympic runner Louis Zamperini spent nearly two years after surviving 47 days at sea following a fighter-jet crash.

Zamperini was taken prisoner by the Japanese during World War II. It appears the film will not spare its viewers of graphic violence common during the time.

Miyavi told Vanity Fair for their December 2014 cover story that Jolie encouraged him to get deep into the soul of his character, getting into the mindset of an extremely violent man. One scene reportedly involved Miyavi's character brutally beating Jack O'Connell, who plays Zamperini.

Miyavi said that part was so powerful that it made him throw up, reports E! Online.

"It was awful torture for me to hate the other actors-I had to have hatred for them," said the 33-year-old rocker and record producer.

"When I had to beat them, I had to think about protecting my family. At the same time, I didn't want to be just a bad guy. I wanted to put humanity in this role. [Matsuhiro] was both crazy and sadistic, but also weak and traumatized," added Miyavi.

Fortunately, Miyavi seemed up for the role and is adamant at performing well for his acting debut.

"It's a story that is still painful for my country," said Miyavi. "But she told me she wanted to make a bridge between all countries that had conflict. She was very persuasive."

Miyavi also admitted that after filming other more violent scenes, he "couldn't stop crying."

"Unbroken" is adapted from Laura Hillenbrand's biography of Louis Zamperini, an Olympian turned World War II POW. According to E!, this film may be one of Jolie's most graphic and disturbingly realistic films yet.

Not only has Angelina proved that she can do both acting and directing, but she is slowly showing that she can direct deep subjects, some of which could be personal to her.

Jolie's regard for "Unbroken" may have stemmed from her humanitarian efforts with refugees displaced by war and war's aftermath all over the world. She also reportedly became very close with Zamperini before his death in July at age 97.

"I was more emotional than he was," Jolie told VF. "I went in to take care of him, and he was taking care of me."

"It was an extremely moving experience, to watch someone watching their own life," added Jolie. "Someone so physically strong...and they are at the stage where their body is giving up."

"Unbroken" isn't the only serious film that Jolie has delved into when it comes to directing; she is also directing husband Brad Pitt on a romantic drama film called "By The Sea." The film tells the story of a married couple going through some difficulties, and with the husband being in the marines, according to the Independent.

Watch the "Unbroken" trailer here.

TagsAngelina Jolie, Unbroken, By the Sea, Brad Pitt, Miyavi, Takamasa Ishihara, Louis Zamperini, Matsuhiro Watanabe