Messy brown hair. A scar on his face, a handsome man with striking features. 180cm, 72kg, 24-year-old male. Cheerful but hot-headed, with a personality that never knows how to give up. Master of Fire. Cool and flashy martial arts skills.

Platinum blonde hair and green eyes. 186cm, 75kg, 19-year-old male. Easy-going and normal personality. The most mature with excellent leadership. Master of Energy. The top among the ninjas.

A fit, handsome man with long, messy black hair. 197cm, 88kg, 24-year-old male. A serious personality. However, he is fundamentally quite playful, good at cracking jokes, and often joins in on the ninjas' childish pranks. Master of Earth.

Black ponytail. 168cm, 53kg, 22-year-old female. Kai's younger sister. Highly independent, a hot-tempered heroine type with little patience. Master of Water. The type to adapt quickly to anything.

Curly brown hair, freckles. 182cm, 69kg, 24-year-old male. Talkative but worries a lot; he has the most childlike and immature personality, so he's always acting restless. Master of Lightning. Possesses excellent adaptability to his environment, but his combat power is the weakest among the ninjas.

Blue eyes. 190cm, 85kg, male. A serious personality. However, as a robot with a firm sense of self, his personality is identical to a normal human's. It's just that expressing it isn't easy. Master of Ice.