Akira Sengoku

Our hero. Formerly the class clown, Akira now finds himself forced to lead his classmates through an island filled with deadly animals.

• Badass
• Big Eater
• Chaste Hero
• Childhood Friend Romance: With Rion.
• Chivalrous Pervert
• Clueless Chick Magnet
• Determinator: And as a result, so is everyone else on his team.
• Disappeared Dad
• The Hero
• The Leader: A mix of types III and IV
• Magnetic Hero

Rion Akagami

Akira's childhood friend.

• Childhood Friend Romance: With Akira.
• The Glomp: Rion is not subtle with her joy at Akira being alive.
• The Lancer
• School Idol
• Zettai Ryouiki

Shirou Mariya

The school prodigy and the first person Akira meets after crashing.

• Infinite Laptop: He carries around a foot pedal peripheral to keep it charged.
• Intelligence Equals Isolation: At least until the plane crashed.
• Megane
• Missing Mom
• Nerd Glasses
• The Smart Guy/The Lancer: To the point where Akira designates him as the leader when he leaves to explore the pyramid.
• The Short Guy with Glasses
• Took a Level in Badass: After Zaji's death.

Kanako Oomori

A clumsy stewardess who Akira meets after crashing.

• The Chick
• Dojikko
• Friend to All Living Things
• Meganekko: In Chapter 4. Usually she wears contacts.
• Schoolgirl Lesbians: The reason she became a flight attendant (in spite of failing the test 16 times) was to be with her former senpai, who was her first love. She insists that it was because she went to all-girl school and that she likes men now.
• Sexy Stewardess
• Team Mom
• Took a Level in Badass

Kazuma "Zaji" Saji

A boy from class 3 who Akira's group meets on the beach.

• The Big Guy
• Likes Older Women
• Missing Mom: She left her family for another man.
• Sacrificial Lion
  • Never Found the Body

Kouichi Yarai

A notorious delinquent from class 4.

• The Ace: He isn't perfect, though. His leadership skills could use some work, and he refuses to take orders from someone else. However, these traits keep him from taking up the limelight too much.
• Badass: Oh yes.
• Delinquents
• Even Bad Men Love Their Mamas: Granted, he's not exactly a bad guy, but the reason he's so attached to Kurusu-sensei is that she reminds him of his (deceased) mother.
• Genius Bruiser
• Heroic BSOD: Has one when he loses to Akira.
• Huge Guy, Tiny Girl: With Kurusu-sensei.
• Improvised Weapon User: His weapons of choice are car keys and 500 yen coins.
• Jerkass Façade: He was always a nice guy, but because but because of his looks, everyone thought he was a jerk and a delinquent, so he decided to play that role. Only his mother and Kurusu-sensei treated him for being him, rather than going by his looks.
• Kuudere
• Love Letter Lunacy: Led Saki Segawa to think he had a crush on her.
• Men Don't Cry: Averted in Chapter 141, where Saki points out that he's crying because doesn't want to kill Akira.
• Missing Mom: Twice, at that!
  • Deceased Parents Are The Best
• The Rival: Sees himself as such.
• The Stoic
  • Nerves of Steel: Hilariously subverted in Chapters 15 and 64, where he laughs at Akira being attacked by the Edwardsi and at the misunderstanding that led Saki to hold a grudge against him. In Chapter 141, he cries because he doesn't want to kill Akira, but Nishikiori won't save Kurusu-sensei if he doesn't.
    • Not So Stoic
• Teens are Short: Averted. He is 190 cm.
• White-Haired Pretty Boy: He isn't particularly villainous, though.
• Younger than They Look: 14 years old, ladies!

Motoko Kurusu

The homeroom teacher of class 4.

• A-Cup Angst: This
• Animal-Eared Headband: Yarai told her that it would protect her from animal attacks and she believed him.
• Attempted Rape: The victim of it in the midst of the panic on the plane. Morita's video reveals that Yarai saved her.
• Badass Teacher: She tries, bless her heart, but she's not that good at it.
• Beauty Is Never Tarnished
• Hot Teacher
• Huge Guy, Tiny Girl: With Yarai.
• Ill Girl: The first to contract the eye disease. And now Nishikiori's revealed that she has internal bleeding.
  • Living on Borrowed Time
  • Mortal Wound Reveal
  • Secretly Dying: Inverted. Her companions know, she doesn't. However, it appears she's figured out the truth on her own.
• Meganekko

Saki Segawa

A girl from a rich family who dislikes Yarai.

• A-Cup Angst
• The Glomp: After Yarai saves her.
• Love Letter Lunacy: Led her to think Yarai had a crush on her.
• Non-Human Sidekick: In Chapter 115, she picks up a turtle and declares that it will be the group's dinner. In Chapter 133, we see that she's kept him and named him "Mr. Lucky".
• The Ojou
• Taking The Punch: Takes a punch from Yarai intended for Akira.

Makiko Shigeno

A girl who has joined Yarai's group with Saki.

• Those Two Girls: With Machika.

Machika Matsumoto

A girl who has joined Yarai's group with Saki.

• Meganekko
• Those Two Girls: With Makiko.

Makoto "Eiken" Morita

A friend of Akira's. Enjoys taking perverted pictures of girls.

• Blinding Bangs
• Camera Fiend

Aya Tokiwa

A girl from class 2 and a member of the track team.

• Action Girl
• Emotionless Girl
• Hair Decorations: Her headband.

Seigou Komiyama

A perverted monk with no interest in girls over the age of 20.

• Ephebophile Monk

Hideo Igarashi

Miina Igarashi

The real one. Carries around a sketchbook filled with drawings of extinct animals.

• Girlish Pigtails
• Trauma Induced Amnesia
• Waif Prophet

Kouhei Arita

Akira's best friend, and a popular boy on the volleyball team.

• The Ace
  • Broken Ace
• All of the Other Reindeer: Initially picked on because of his curly hair. When Akira called it cool, the other children agreed and soon Kouhei became popular.
• Beauty Mark
• Easily Forgiven: Sorta. Although Akira saves his life and still considers him his best friend, he agrees that what Kouhei has done is unforgivable.
• Heroic Sacrifice
  • Redemption Equals Death
  • Never Found the Body
    • Came Back Strong: Turns out Hades found him in a near-death state and saved him. And he aided Akira's group without revealing his identity by grabbing a giant monster and pulling it down a hole.
• Murder Makes You Crazy
• These Hands Have Killed

Miina Isurugi

A 10 year old girl (or not) in control of a group of 30 men. In reality, "she" is actually a body double for the real Miina Isurugi.

• Chekhov's Gunman: First seen running with her back to the camera on Eiken's Apocalyptic Log.
• A Child Shall Lead Them
• Deadpan Snarker
  • Little Miss Snarker: For any given value of "Miss", anyway...
• Girlish Pigtails
• Harmful to Minors: Witnessed his group's assault and murder of Towa-senpai.
• Manipulative Bastard/Guile Hero: The former being how she accomplishes the latter.
• No Name Given: Has yet to give his real name. And no, it isn't "Naisho".
• The Sixth Ranger
• Transsexual: Quite possibly. It's increasingly hard to tell how much of his identification as female is because he likes screwing with people's heads, and how much is because he genuinely feels more comfortable that way. It's certainly notable how little things change once everyone knows his secret, and he has no reason to hide it any more.
• Wholesome Crossdresser

Yuki Sakuma

The class representative of class 4, Yuki was always scolding Akira for goofing around. Initially a member of Kouhei's group, she joins Akira's group after being rescued from drowning.

• Class Representative
• Hair Decorations: Two blue hair clips.
• The Seventh Ranger

Takashi Yamaguchi

The student council president. Initially, he is working with his group to build a school on the island. However, once Akira reveals who assaulted Miina, he and his group decide to join Akira's.

• Megane
• Student Council President

Maya Miyauchi

A childhood friend of Zaji's and an initial member of Yamaguchi's group.

• Action Girl
• Alliterative Name
• Badass
• The Big Guy: Takes this role after Zaji's death.
• Tsurime Eyes
• Why Did It Have To Be Bugs?

Rei Ooguro

A 20-year-old university student and a childhood friend of Tooru.

• Absolute Cleavage
• Cosplay Otaku Girl: Her profile indicates that she is this, and she actually has an eyepatch she uses for cosplay with her.
• Dead Little Brother: Averted. Rei shows Miina a picture to show that her brother is successfully recovering.

Tooru Rinzai

A university student and childhood friend of Rei's.

• Good Scars, Evil Scars: First introduced with bandages covering his face because he's ashamed of them. During this time, he is silent and rather off-putting. Once the bandages come off, the group quickly points out that the scars actually look pretty cool. Tooru himself becomes much more open and friendly.