Mutsumi Oribe

36

Mutsumi Oribe (織部 睦美, Oribe Mutsumi) is the main Protagonist character of The Island of Giant Insects and The Even Bigger Island of Giant Insects. Mutsumi is a friendly and caring girl with a protective nature. Due to her love of entomology, Mutsumi is greatly distressed whenever she's forced to kill an insect. She takes a more proactive role in the group. Due to seeing so many people die in front of her, she begins to blame herself for not acting as quicker but then      She sees her childhood friend who is quite a strong man and doesn't fear by no one not even a giant bugs will scare him off he makes sure of protecting her of all costs and you'll be the main character who protects her and get her home.

Chitose Naruse

33

Chitose Naruse (ちとせ 成瀬, Naruse Chitose) is a major character in The Island of Giant Insects and The Even Bigger Island of Giant Insects. As the class president, Chitose is a natural leader and commands the respect of her fellow students; she has a sense of rectitude, and is constantly standing up to what she believes incorrect. 

Marika Chuujou

7

Marika Chuujou (中城 茉莉華, Chuujou Marika) was a minor antagonist in The Island of Giant Insects. She is a school teacher, Seemingly stern, stone-faced, and unwavering, Marika is a woman to be respected. It's mentioned that at school, she was strict but was still willing to listen to her students.

Kayo Suzuki 

24

Kayo Suzuki (鈴木 香代, Suzuki Kayo) is a minor character in The Island of Giant Insects. Not much is known except that Kayo was weak-willed and considered herself of little use on the island. So you will be her  friend and always watching over her even in the darkest time you will keep her safe from the giant bugs from the jungle.