Nightmare Fuel / Battle Royale

• The infamous Cold Open of the movie shows a girl who managed to win the Battle Royale she was placed in, sporting an extremely creepy Slasher Smile. The opening scene of the manga is even more gruesome, showing the girl smiling horribly and not even looking human anymore.
• The ridiculous amounts of Gorn in the manga. Even the novel is filled with huge amounts of it.
• The fact that every student in Battle Royale's Japan lives in a world where they could get placed in The Program no matter how nice they are.
  • Even worse, in the English manga, Shogo mentions killing a French exchange student who was in his class when they were selected for the Program. Imagine being a parent from France or America or Britain who sends your child off to have a fun and educational foreign experience, only to learn that your child is now going to be forced to participate in a brutal, sadistic deathmatch, and there is nothing you can do to save them.
• When you learn that the kids are only in 9th grade, it makes it even creepier that the government forces them to kill one another for what's implied to be For the Evulz. Even worse in the manga in how it’s mentioned how the students are expected to horribly torture, rape, and kill each other for the commercial entertainment of masses overseas, meaning the Japanese Government is selectively killing its own children citizens for profit and ratings.
• Since other students won The Program shows how many people were willing to slaughter their classmates, with many shown to be driven into insanity because of it.
• Your best friend might kill you, or will you kill him/her?
  • The horrifying part is this happened in the movie, and it's easily missed: the two girls who pledged to be friends forever? They're announced dead at the same time, in the same clip, during one of the updates. They killed each other.
    • Either that, or they formed a suicide pact, which isn't much better.
    • Or they were killed cowering together. Or fleeing together. Speculate all day, all we know is they both died around the same time.
• The constant fear that anyone in your class may turn on you is very creepy.
• Kazuo Kiriyama finds killing his classmates the same as playing an instrument and the scary part is how much he's a virtuoso in both.
  • Just about any scene with Kazuo Kiriyama attacking someone turns nightmarish with many wondering if he's even human. Michael Myers, eat your heart out.
• In the film, you have to wonder what kind of person would sign up for The Program for fun. That person is Kiriyama.
  • Kiriyama isn't an isolated case either, Shogo mentions his year had a 'volunteer' too. One who it's entirely possibly that Shogo had to kill personally.
• When Sho gets Out-Gambitted by Kiriyama he can do nothing but scream as his head is about to explode.
• The Slasher Smile Mitsuko gives in the film is terrifying.
  • Also Kiriyama's.
• Megumi's death late at night at the hands of Mitsuko, along with the haunting soundtrack, is horrifying and informs us that Mitsuko is most definitely playing this game for keeps.
• Anyone that resists going into The Program is killed.
• In the manga, there are lots of flashbacks with most characters being happy-go-lucky... but they're the exact opposite now.
• The remnants of Mitsuko's corpse are anything but pretty. In the manga, she dies completely naked.
• Even at the end of the book, Shuya and Noriko fail to completely stop The Program from existing, meaning kids are still being killed while they're to be hunted as fugitives.
• The crotch stabbing scene.
• Also in the manga there's a good deal of eye screams.
  • A manga scene where Kiriyama casually pokes out the eye of the class' former PE teacher, grabs the hanging eyeball and squeezes it definitely takes the cake. The whole scene is exhibited with rather elaborate, graphic panels and Kiriyama's disturbingly calm remarks.
  "It's like egg whites..."
  • There is a particularly disturbing eye scream in Battle Royale II where one girl's eyes are shot out by a sniper and she flails about wildly screaming for her best friend, who is in a nearby naval boat screaming for her - then the blind girl's boat explodes.
• There is a particularly disturbing scene in the manga involving Mitsuko and Yuichiro. Yuichiro is dying of a bullet wound, and Mitsuko, who is somewhat deranged at this point after killing Tadakatsu and has regressed to her fucked-up childhood mental state, decides to make him better...by raping him. Yuichiro begs for her to stop, as she is hurting him, and Mitsuko responds by stabbing the poor little guy in the neck with her sickle, seeing his cries of pain as a betrayal. As he dies, she is shown as a giant, damaged version of the doll her father gave her, asking, "How do you like my eyes now?" It's very unsettling to see how quickly classmates (and even friends) start killing each other. (And without even counting the likes of Kazuo Kiriyama or Mitsuko Souma.)
• In the movie, Kiriyama's eyes after he's blinded by Shinji's bomb.
• Kaori Minami, a chubby acne suffering girl who has gone insane under the pressures of the game. She's under the belief that the Idol Junya Kenzaki speaks to her as a coping mechanism and fears the touch of anything against her skin, as she feels it makes her acne worse, to the point she murders a kitten with an insane slasher smile on her face and tries to kill her classmates for trying to get close to her, talking about the "Bad poking kitty!" the whole time.
• In the film, Kiriyama's attack on the clinic is spinechilling and could easily be pulled from a straight horror movie. It starts when screaming and gunfire intrupts a cozy bonding moment between Noriko & Shuuya and Kawada, forcing the try to dim the lights and draw the curtains in an attempt to hide. The three are forced to watch Kiriyama kills Oda, then we get their point of view as Kiriyama attempts to get inside the clinic -rushing by windows, pulling at the locked doorknob, and putting his bloody hand on the glass- all while Noriko and Shuuya cower in fear and Kawada stands in front of the door ready to start blasting. And it ends when Kiriyama stuffing a grenade into the mouth of Oda's severed head and tossing it through the window.
  • Especially scary from Shogo's point of view. He knows that Kiriyama joined the game willing and mentions that his year had someone like that. It's entirely possible that Shogo himself was the one to kill that volunteer and, while he manages a cool head throughout, it's easy to imagine Shogo is remembering what went down then.